./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg --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 cb55eb0e5d7c4df3b95a55b83f19894edf68e79ccb0eab5e69a8aa23c994caed ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:59:01,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:59:01,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:59:01,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:59:01,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:59:01,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:59:01,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:59:01,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:59:01,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:59:01,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:59:01,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:59:01,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:59:01,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:59:01,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:59:01,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:59:01,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:59:01,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:59:01,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:59:01,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:59:01,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:59:01,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:59:01,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:59:01,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:59:01,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:59:01,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:59:01,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:59:01,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:59:01,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:59:01,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:59:01,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:59:01,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:59:01,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:59:01,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:59:01,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:59:01,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:59:01,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:59:01,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:59:01,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:59:01,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:59:01,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:59:01,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:59:01,630 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 08:59:01,667 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:59:01,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:59:01,668 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:59:01,668 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:59:01,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:59:01,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:59:01,670 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:59:01,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:59:01,670 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:59:01,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:59:01,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:59:01,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:59:01,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 08:59:01,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:59:01,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 08:59:01,672 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:59:01,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:59:01,672 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:59:01,673 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 08:59:01,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:59:01,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:59:01,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:59:01,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:59:01,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:59:01,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:59:01,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 08:59:01,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:59:01,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:59:01,675 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 08:59:01,675 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 08:59:01,676 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 08:59:01,676 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:59:01,676 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_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb55eb0e5d7c4df3b95a55b83f19894edf68e79ccb0eab5e69a8aa23c994caed [2021-10-28 08:59:01,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:59:01,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:59:01,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:59:01,971 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:59:01,972 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:59:01,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound50.c [2021-10-28 08:59:02,057 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/data/8c0d4d74d/31f8aeb4a472479fbe881e4d0d5c8430/FLAG4787b4518 [2021-10-28 08:59:02,550 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:59:02,550 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound50.c [2021-10-28 08:59:02,558 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/data/8c0d4d74d/31f8aeb4a472479fbe881e4d0d5c8430/FLAG4787b4518 [2021-10-28 08:59:02,956 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/data/8c0d4d74d/31f8aeb4a472479fbe881e4d0d5c8430 [2021-10-28 08:59:02,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:59:02,960 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:59:02,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:59:02,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:59:02,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:59:02,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:59:02" (1/1) ... [2021-10-28 08:59:02,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14e51b4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:02, skipping insertion in model container [2021-10-28 08:59:02,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:59:02" (1/1) ... [2021-10-28 08:59:02,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:59:03,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:59:03,161 WARN L228 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_03086abc-848d-478d-9cca-36cc6c0d4f29/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound50.c[588,601] [2021-10-28 08:59:03,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:59:03,217 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:59:03,237 WARN L228 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_03086abc-848d-478d-9cca-36cc6c0d4f29/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound50.c[588,601] [2021-10-28 08:59:03,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:59:03,284 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:59:03,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:03 WrapperNode [2021-10-28 08:59:03,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:59:03,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:59:03,287 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:59:03,288 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:59:03,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:03" (1/1) ... [2021-10-28 08:59:03,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:03" (1/1) ... [2021-10-28 08:59:03,350 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:59:03,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:59:03,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:59:03,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:59:03,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:03" (1/1) ... [2021-10-28 08:59:03,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:03" (1/1) ... [2021-10-28 08:59:03,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:03" (1/1) ... [2021-10-28 08:59:03,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:03" (1/1) ... [2021-10-28 08:59:03,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:03" (1/1) ... [2021-10-28 08:59:03,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:03" (1/1) ... [2021-10-28 08:59:03,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:03" (1/1) ... [2021-10-28 08:59:03,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:59:03,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:59:03,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:59:03,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:59:03,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:03" (1/1) ... [2021-10-28 08:59:03,411 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:59:03,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:59:03,444 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:59:03,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:59:03,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:59:03,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:59:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:59:03,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:59:03,836 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:59:03,837 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-10-28 08:59:03,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:59:03 BoogieIcfgContainer [2021-10-28 08:59:03,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:59:03,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:59:03,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:59:03,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:59:03,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:59:02" (1/3) ... [2021-10-28 08:59:03,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1e99fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:59:03, skipping insertion in model container [2021-10-28 08:59:03,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:03" (2/3) ... [2021-10-28 08:59:03,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1e99fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:59:03, skipping insertion in model container [2021-10-28 08:59:03,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:59:03" (3/3) ... [2021-10-28 08:59:03,851 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_unwindbound50.c [2021-10-28 08:59:03,856 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:59:03,856 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-10-28 08:59:03,912 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:59:03,919 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 [2021-10-28 08:59:03,919 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-10-28 08:59:03,939 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 40 states have (on average 1.625) internal successors, (65), 51 states have internal predecessors, (65), 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) [2021-10-28 08:59:03,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 08:59:03,945 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:59:03,945 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 08:59:03,946 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 08:59:03,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:03,957 INFO L85 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-28 08:59:03,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:03,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040798026] [2021-10-28 08:59:03,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:03,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:04,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:59:04,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:04,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040798026] [2021-10-28 08:59:04,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040798026] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:59:04,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:59:04,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:59:04,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396417367] [2021-10-28 08:59:04,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:59:04,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:04,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:59:04,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:59:04,309 INFO L87 Difference]: Start difference. First operand has 52 states, 40 states have (on average 1.625) internal successors, (65), 51 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-10-28 08:59:04,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:59:04,445 INFO L93 Difference]: Finished difference Result 101 states and 129 transitions. [2021-10-28 08:59:04,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:59:04,447 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2021-10-28 08:59:04,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:59:04,456 INFO L225 Difference]: With dead ends: 101 [2021-10-28 08:59:04,456 INFO L226 Difference]: Without dead ends: 47 [2021-10-28 08:59:04,459 INFO L786 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 [2021-10-28 08:59:04,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-28 08:59:04,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2021-10-28 08:59:04,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 43 states have internal predecessors, (45), 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) [2021-10-28 08:59:04,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2021-10-28 08:59:04,494 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 6 [2021-10-28 08:59:04,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:59:04,495 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2021-10-28 08:59:04,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-10-28 08:59:04,495 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2021-10-28 08:59:04,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 08:59:04,496 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:59:04,496 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:04,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:59:04,497 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 08:59:04,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:04,498 INFO L85 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-10-28 08:59:04,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:04,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721647532] [2021-10-28 08:59:04,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:04,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:04,515 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:59:04,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485042619] [2021-10-28 08:59:04,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:04,516 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:59:04,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:59:04,518 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:59:04,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 08:59:04,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:04,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 08:59:04,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:59:04,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:59:04,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:04,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721647532] [2021-10-28 08:59:04,712 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:59:04,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485042619] [2021-10-28 08:59:04,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485042619] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:59:04,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:59:04,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:59:04,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567009922] [2021-10-28 08:59:04,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:59:04,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:04,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:59:04,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:59:04,716 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-28 08:59:04,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:59:04,865 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2021-10-28 08:59:04,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:59:04,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-28 08:59:04,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:59:04,872 INFO L225 Difference]: With dead ends: 86 [2021-10-28 08:59:04,872 INFO L226 Difference]: Without dead ends: 84 [2021-10-28 08:59:04,876 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:59:04,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-28 08:59:04,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 49. [2021-10-28 08:59:04,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.275) internal successors, (51), 48 states have internal predecessors, (51), 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) [2021-10-28 08:59:04,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2021-10-28 08:59:04,905 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 8 [2021-10-28 08:59:04,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:59:04,906 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2021-10-28 08:59:04,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-28 08:59:04,907 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2021-10-28 08:59:04,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 08:59:04,908 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:59:04,909 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:04,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 08:59:05,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:59:05,118 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 08:59:05,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:05,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1269812074, now seen corresponding path program 1 times [2021-10-28 08:59:05,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:05,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949251346] [2021-10-28 08:59:05,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:05,120 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:05,135 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:59:05,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1390084405] [2021-10-28 08:59:05,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:05,136 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:59:05,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:59:05,137 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:59:05,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 08:59:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:05,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 08:59:05,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:59:05,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:59:05,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:05,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949251346] [2021-10-28 08:59:05,249 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:59:05,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390084405] [2021-10-28 08:59:05,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390084405] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:59:05,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:59:05,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:59:05,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730581708] [2021-10-28 08:59:05,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:59:05,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:05,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:59:05,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:59:05,253 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:05,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:59:05,287 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2021-10-28 08:59:05,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:59:05,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-28 08:59:05,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:59:05,288 INFO L225 Difference]: With dead ends: 71 [2021-10-28 08:59:05,288 INFO L226 Difference]: Without dead ends: 49 [2021-10-28 08:59:05,289 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:59:05,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-28 08:59:05,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-10-28 08:59:05,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.25) internal successors, (50), 48 states have internal predecessors, (50), 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) [2021-10-28 08:59:05,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2021-10-28 08:59:05,296 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 9 [2021-10-28 08:59:05,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:59:05,297 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2021-10-28 08:59:05,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:05,297 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2021-10-28 08:59:05,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 08:59:05,298 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:59:05,298 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:05,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 08:59:05,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:59:05,499 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 08:59:05,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:05,500 INFO L85 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-10-28 08:59:05,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:05,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689292852] [2021-10-28 08:59:05,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:05,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:05,510 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:59:05,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [880779361] [2021-10-28 08:59:05,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:05,510 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:59:05,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:59:05,527 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:59:05,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 08:59:05,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:05,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 08:59:05,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:59:05,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:59:05,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:05,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689292852] [2021-10-28 08:59:05,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:59:05,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880779361] [2021-10-28 08:59:05,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880779361] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:59:05,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:59:05,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:59:05,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421953534] [2021-10-28 08:59:05,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:59:05,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:05,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:59:05,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:59:05,708 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-10-28 08:59:05,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:59:05,810 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2021-10-28 08:59:05,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:59:05,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-10-28 08:59:05,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:59:05,816 INFO L225 Difference]: With dead ends: 84 [2021-10-28 08:59:05,816 INFO L226 Difference]: Without dead ends: 80 [2021-10-28 08:59:05,817 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:59:05,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-28 08:59:05,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2021-10-28 08:59:05,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 59 states have internal predecessors, (64), 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) [2021-10-28 08:59:05,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2021-10-28 08:59:05,830 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 10 [2021-10-28 08:59:05,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:59:05,831 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2021-10-28 08:59:05,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-10-28 08:59:05,831 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2021-10-28 08:59:05,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 08:59:05,832 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:59:05,832 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:05,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 08:59:06,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:59:06,051 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 08:59:06,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:06,052 INFO L85 PathProgramCache]: Analyzing trace with hash -828134125, now seen corresponding path program 1 times [2021-10-28 08:59:06,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:06,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034451563] [2021-10-28 08:59:06,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:06,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:06,066 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:59:06,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1763554576] [2021-10-28 08:59:06,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:06,066 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:59:06,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:59:06,068 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:59:06,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 08:59:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:06,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 08:59:06,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:59:06,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:59:06,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:06,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034451563] [2021-10-28 08:59:06,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:59:06,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763554576] [2021-10-28 08:59:06,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763554576] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:59:06,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:59:06,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:59:06,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122894749] [2021-10-28 08:59:06,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:59:06,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:06,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:59:06,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:59:06,306 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:06,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:59:06,451 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2021-10-28 08:59:06,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:59:06,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-28 08:59:06,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:59:06,455 INFO L225 Difference]: With dead ends: 83 [2021-10-28 08:59:06,455 INFO L226 Difference]: Without dead ends: 59 [2021-10-28 08:59:06,456 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:59:06,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-28 08:59:06,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2021-10-28 08:59:06,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 55 states have internal predecessors, (57), 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) [2021-10-28 08:59:06,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2021-10-28 08:59:06,470 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 12 [2021-10-28 08:59:06,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:59:06,470 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2021-10-28 08:59:06,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:06,470 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2021-10-28 08:59:06,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 08:59:06,471 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:59:06,471 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:06,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 08:59:06,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:59:06,693 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 08:59:06,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:06,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1416701979, now seen corresponding path program 1 times [2021-10-28 08:59:06,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:06,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125892265] [2021-10-28 08:59:06,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:06,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:06,708 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:59:06,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1146328378] [2021-10-28 08:59:06,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:06,708 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:59:06,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:59:06,711 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:59:06,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 08:59:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:06,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 08:59:06,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:59:07,011 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:59:07,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:07,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125892265] [2021-10-28 08:59:07,012 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:59:07,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146328378] [2021-10-28 08:59:07,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146328378] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:59:07,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 08:59:07,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 08:59:07,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637134068] [2021-10-28 08:59:07,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:59:07,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:07,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:59:07,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:59:07,014 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:07,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:59:07,159 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2021-10-28 08:59:07,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:59:07,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-28 08:59:07,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:59:07,162 INFO L225 Difference]: With dead ends: 99 [2021-10-28 08:59:07,162 INFO L226 Difference]: Without dead ends: 97 [2021-10-28 08:59:07,162 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:59:07,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-28 08:59:07,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 61. [2021-10-28 08:59:07,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 60 states have internal predecessors, (63), 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) [2021-10-28 08:59:07,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2021-10-28 08:59:07,175 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 20 [2021-10-28 08:59:07,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:59:07,175 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2021-10-28 08:59:07,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:07,176 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2021-10-28 08:59:07,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 08:59:07,176 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:59:07,177 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:07,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 08:59:07,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:59:07,378 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 08:59:07,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:07,378 INFO L85 PathProgramCache]: Analyzing trace with hash -972705934, now seen corresponding path program 1 times [2021-10-28 08:59:07,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:07,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483701608] [2021-10-28 08:59:07,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:07,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:07,407 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:59:07,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1884294735] [2021-10-28 08:59:07,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:07,408 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:59:07,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:59:07,441 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:59:07,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 08:59:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:07,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 08:59:07,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:59:07,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:59:07,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:07,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483701608] [2021-10-28 08:59:07,640 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:59:07,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884294735] [2021-10-28 08:59:07,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884294735] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:59:07,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 08:59:07,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-10-28 08:59:07,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623785464] [2021-10-28 08:59:07,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:59:07,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:07,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:59:07,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:59:07,646 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:07,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:59:07,672 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2021-10-28 08:59:07,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:59:07,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-28 08:59:07,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:59:07,673 INFO L225 Difference]: With dead ends: 83 [2021-10-28 08:59:07,673 INFO L226 Difference]: Without dead ends: 61 [2021-10-28 08:59:07,676 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:59:07,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-28 08:59:07,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-10-28 08:59:07,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 52 states have (on average 1.1923076923076923) internal successors, (62), 60 states have internal predecessors, (62), 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) [2021-10-28 08:59:07,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2021-10-28 08:59:07,695 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 21 [2021-10-28 08:59:07,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:59:07,696 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2021-10-28 08:59:07,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:07,696 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2021-10-28 08:59:07,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 08:59:07,698 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:59:07,698 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:07,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 08:59:07,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-28 08:59:07,919 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 08:59:07,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:07,920 INFO L85 PathProgramCache]: Analyzing trace with hash 54186920, now seen corresponding path program 1 times [2021-10-28 08:59:07,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:07,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416016511] [2021-10-28 08:59:07,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:07,920 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:07,936 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:59:07,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [837199530] [2021-10-28 08:59:07,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:07,943 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:59:07,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:59:07,950 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:59:07,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 08:59:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:08,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 08:59:08,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:59:08,297 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:59:08,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:08,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416016511] [2021-10-28 08:59:08,297 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:59:08,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837199530] [2021-10-28 08:59:08,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837199530] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:59:08,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 08:59:08,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 08:59:08,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14674022] [2021-10-28 08:59:08,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:59:08,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:08,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:59:08,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:59:08,303 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-10-28 08:59:08,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:59:08,449 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2021-10-28 08:59:08,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:59:08,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2021-10-28 08:59:08,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:59:08,456 INFO L225 Difference]: With dead ends: 96 [2021-10-28 08:59:08,457 INFO L226 Difference]: Without dead ends: 94 [2021-10-28 08:59:08,457 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:59:08,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-28 08:59:08,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 63. [2021-10-28 08:59:08,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 62 states have internal predecessors, (64), 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) [2021-10-28 08:59:08,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2021-10-28 08:59:08,485 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 22 [2021-10-28 08:59:08,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:59:08,485 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2021-10-28 08:59:08,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-10-28 08:59:08,486 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2021-10-28 08:59:08,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 08:59:08,487 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:59:08,487 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:08,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-28 08:59:08,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-28 08:59:08,699 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 08:59:08,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:08,700 INFO L85 PathProgramCache]: Analyzing trace with hash 534178827, now seen corresponding path program 1 times [2021-10-28 08:59:08,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:08,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849338597] [2021-10-28 08:59:08,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:08,700 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:08,730 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:59:08,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [699292889] [2021-10-28 08:59:08,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:08,730 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:59:08,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:59:08,732 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:59:08,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-28 08:59:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:08,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 08:59:08,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:59:09,197 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:59:09,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:09,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849338597] [2021-10-28 08:59:09,198 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:59:09,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699292889] [2021-10-28 08:59:09,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699292889] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:59:09,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 08:59:09,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 08:59:09,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811173542] [2021-10-28 08:59:09,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:59:09,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:09,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:59:09,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:59:09,203 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:09,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:59:09,347 INFO L93 Difference]: Finished difference Result 97 states and 99 transitions. [2021-10-28 08:59:09,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:59:09,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-28 08:59:09,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:59:09,348 INFO L225 Difference]: With dead ends: 97 [2021-10-28 08:59:09,348 INFO L226 Difference]: Without dead ends: 81 [2021-10-28 08:59:09,349 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:59:09,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-28 08:59:09,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2021-10-28 08:59:09,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 73 states have internal predecessors, (77), 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) [2021-10-28 08:59:09,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2021-10-28 08:59:09,363 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 24 [2021-10-28 08:59:09,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:59:09,363 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2021-10-28 08:59:09,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:09,364 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2021-10-28 08:59:09,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-28 08:59:09,365 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:59:09,365 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:09,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-28 08:59:09,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:59:09,566 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 08:59:09,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:09,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1750673281, now seen corresponding path program 1 times [2021-10-28 08:59:09,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:09,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604301468] [2021-10-28 08:59:09,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:09,567 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:09,578 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:59:09,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1272860024] [2021-10-28 08:59:09,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:09,578 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:59:09,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:59:09,579 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:59:09,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-28 08:59:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:09,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-28 08:59:09,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:59:10,736 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:59:10,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:10,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604301468] [2021-10-28 08:59:10,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:59:10,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272860024] [2021-10-28 08:59:10,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272860024] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:59:10,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 08:59:10,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 08:59:10,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443361040] [2021-10-28 08:59:10,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:59:10,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:10,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:59:10,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:59:10,740 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:10,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:59:10,981 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2021-10-28 08:59:10,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 08:59:10,982 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-28 08:59:10,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:59:10,983 INFO L225 Difference]: With dead ends: 78 [2021-10-28 08:59:10,983 INFO L226 Difference]: Without dead ends: 76 [2021-10-28 08:59:10,983 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-28 08:59:10,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-28 08:59:10,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2021-10-28 08:59:10,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 73 states have internal predecessors, (76), 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) [2021-10-28 08:59:10,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2021-10-28 08:59:10,990 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 31 [2021-10-28 08:59:10,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:59:10,990 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2021-10-28 08:59:10,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:10,990 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2021-10-28 08:59:10,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 08:59:10,991 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:59:10,992 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-28 08:59:11,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-28 08:59:11,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-28 08:59:11,219 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 08:59:11,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:11,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1324326621, now seen corresponding path program 2 times [2021-10-28 08:59:11,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:11,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452480169] [2021-10-28 08:59:11,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:11,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:11,234 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:59:11,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [756400579] [2021-10-28 08:59:11,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 08:59:11,234 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:59:11,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:59:11,236 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:59:11,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-28 08:59:11,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 08:59:11,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:59:11,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 08:59:11,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:59:11,904 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:59:11,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:11,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452480169] [2021-10-28 08:59:11,905 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:59:11,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756400579] [2021-10-28 08:59:11,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756400579] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:59:11,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 08:59:11,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 08:59:11,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899505280] [2021-10-28 08:59:11,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:59:11,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:11,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:59:11,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:59:11,908 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:12,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:59:12,183 INFO L93 Difference]: Finished difference Result 119 states and 121 transitions. [2021-10-28 08:59:12,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 08:59:12,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-28 08:59:12,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:59:12,185 INFO L225 Difference]: With dead ends: 119 [2021-10-28 08:59:12,185 INFO L226 Difference]: Without dead ends: 117 [2021-10-28 08:59:12,186 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:59:12,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-10-28 08:59:12,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 79. [2021-10-28 08:59:12,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 70 states have (on average 1.1714285714285715) internal successors, (82), 78 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) [2021-10-28 08:59:12,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2021-10-28 08:59:12,196 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 32 [2021-10-28 08:59:12,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:59:12,196 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2021-10-28 08:59:12,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:12,196 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2021-10-28 08:59:12,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 08:59:12,198 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:59:12,198 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:12,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-28 08:59:12,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:59:12,412 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 08:59:12,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:12,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1230314914, now seen corresponding path program 1 times [2021-10-28 08:59:12,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:12,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252363883] [2021-10-28 08:59:12,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:12,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:12,428 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:59:12,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [638924010] [2021-10-28 08:59:12,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:12,429 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:59:12,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:59:12,431 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:59:12,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-28 08:59:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:12,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 08:59:12,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:59:13,256 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:59:13,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:13,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252363883] [2021-10-28 08:59:13,257 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:59:13,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638924010] [2021-10-28 08:59:13,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638924010] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:59:13,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 08:59:13,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 08:59:13,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379033035] [2021-10-28 08:59:13,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:59:13,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:13,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:59:13,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:59:13,260 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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) [2021-10-28 08:59:13,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:59:13,479 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2021-10-28 08:59:13,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 08:59:13,480 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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 33 [2021-10-28 08:59:13,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:59:13,481 INFO L225 Difference]: With dead ends: 82 [2021-10-28 08:59:13,481 INFO L226 Difference]: Without dead ends: 74 [2021-10-28 08:59:13,481 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:59:13,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-28 08:59:13,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2021-10-28 08:59:13,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 64 states have (on average 1.171875) internal successors, (75), 72 states have internal predecessors, (75), 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) [2021-10-28 08:59:13,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2021-10-28 08:59:13,487 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 33 [2021-10-28 08:59:13,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:59:13,488 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2021-10-28 08:59:13,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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) [2021-10-28 08:59:13,488 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2021-10-28 08:59:13,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 08:59:13,492 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:59:13,492 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:13,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-28 08:59:13,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:59:13,711 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 08:59:13,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:13,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1900165254, now seen corresponding path program 2 times [2021-10-28 08:59:13,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:13,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412859655] [2021-10-28 08:59:13,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:13,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:13,736 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:59:13,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [851067229] [2021-10-28 08:59:13,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 08:59:13,737 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:59:13,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:59:13,738 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:59:13,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-28 08:59:14,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 08:59:14,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:59:14,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 08:59:14,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:59:14,123 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:59:14,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:14,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412859655] [2021-10-28 08:59:14,124 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:59:14,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851067229] [2021-10-28 08:59:14,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851067229] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:59:14,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 08:59:14,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 08:59:14,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841134280] [2021-10-28 08:59:14,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:59:14,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:14,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:59:14,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:59:14,126 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 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) [2021-10-28 08:59:14,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:59:14,155 INFO L93 Difference]: Finished difference Result 95 states and 96 transitions. [2021-10-28 08:59:14,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 08:59:14,156 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 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 33 [2021-10-28 08:59:14,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:59:14,156 INFO L225 Difference]: With dead ends: 95 [2021-10-28 08:59:14,157 INFO L226 Difference]: Without dead ends: 73 [2021-10-28 08:59:14,157 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:59:14,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-28 08:59:14,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-10-28 08:59:14,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 64 states have (on average 1.15625) internal successors, (74), 72 states have internal predecessors, (74), 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) [2021-10-28 08:59:14,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2021-10-28 08:59:14,164 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 33 [2021-10-28 08:59:14,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:59:14,164 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2021-10-28 08:59:14,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 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) [2021-10-28 08:59:14,164 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2021-10-28 08:59:14,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 08:59:14,165 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:59:14,165 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-28 08:59:14,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-28 08:59:14,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-28 08:59:14,391 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 08:59:14,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:14,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1367719072, now seen corresponding path program 2 times [2021-10-28 08:59:14,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:14,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787986379] [2021-10-28 08:59:14,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:14,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:14,401 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:59:14,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487233672] [2021-10-28 08:59:14,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 08:59:14,402 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:59:14,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:59:14,403 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:59:14,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-28 08:59:14,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 08:59:14,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:59:14,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-28 08:59:14,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:59:15,216 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:59:15,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:15,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787986379] [2021-10-28 08:59:15,217 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:59:15,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487233672] [2021-10-28 08:59:15,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487233672] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:59:15,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 08:59:15,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 08:59:15,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002231435] [2021-10-28 08:59:15,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 08:59:15,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:15,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 08:59:15,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:59:15,220 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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) [2021-10-28 08:59:15,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:59:15,757 INFO L93 Difference]: Finished difference Result 111 states and 113 transitions. [2021-10-28 08:59:15,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 08:59:15,758 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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 34 [2021-10-28 08:59:15,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:59:15,759 INFO L225 Difference]: With dead ends: 111 [2021-10-28 08:59:15,759 INFO L226 Difference]: Without dead ends: 109 [2021-10-28 08:59:15,760 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-28 08:59:15,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-28 08:59:15,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 75. [2021-10-28 08:59:15,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 66 states have (on average 1.1515151515151516) internal successors, (76), 74 states have internal predecessors, (76), 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) [2021-10-28 08:59:15,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2021-10-28 08:59:15,772 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 34 [2021-10-28 08:59:15,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:59:15,774 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2021-10-28 08:59:15,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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) [2021-10-28 08:59:15,774 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2021-10-28 08:59:15,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-28 08:59:15,775 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:59:15,776 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-28 08:59:15,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-28 08:59:15,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-28 08:59:15,999 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 08:59:15,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:15,999 INFO L85 PathProgramCache]: Analyzing trace with hash 118191875, now seen corresponding path program 2 times [2021-10-28 08:59:16,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:16,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586659288] [2021-10-28 08:59:16,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:16,000 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:16,012 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:59:16,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [110139462] [2021-10-28 08:59:16,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 08:59:16,013 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:59:16,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:59:16,014 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:59:16,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-28 08:59:16,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 08:59:16,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:59:16,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 08:59:16,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:59:25,353 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-28 08:59:25,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:25,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586659288] [2021-10-28 08:59:25,353 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:59:25,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110139462] [2021-10-28 08:59:25,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110139462] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:59:25,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:59:25,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 08:59:25,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299602328] [2021-10-28 08:59:25,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 08:59:25,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:25,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 08:59:25,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=54, Unknown=1, NotChecked=0, Total=72 [2021-10-28 08:59:25,356 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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) [2021-10-28 09:00:06,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:00:06,232 INFO L93 Difference]: Finished difference Result 90 states and 91 transitions. [2021-10-28 09:00:06,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:00:06,232 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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 36 [2021-10-28 09:00:06,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:00:06,233 INFO L225 Difference]: With dead ends: 90 [2021-10-28 09:00:06,233 INFO L226 Difference]: Without dead ends: 84 [2021-10-28 09:00:06,234 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=58, Invalid=151, Unknown=1, NotChecked=0, Total=210 [2021-10-28 09:00:06,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-28 09:00:06,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 79. [2021-10-28 09:00:06,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 72 states have (on average 1.1388888888888888) internal successors, (82), 78 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) [2021-10-28 09:00:06,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2021-10-28 09:00:06,262 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 36 [2021-10-28 09:00:06,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:00:06,262 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2021-10-28 09:00:06,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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) [2021-10-28 09:00:06,263 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2021-10-28 09:00:06,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-28 09:00:06,263 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:00:06,264 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:00:06,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-28 09:00:06,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-28 09:00:06,480 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:00:06,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:00:06,481 INFO L85 PathProgramCache]: Analyzing trace with hash -230259065, now seen corresponding path program 2 times [2021-10-28 09:00:06,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:00:06,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651053654] [2021-10-28 09:00:06,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:00:06,481 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:00:06,491 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:00:06,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1701921772] [2021-10-28 09:00:06,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:00:06,495 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:00:06,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:00:06,496 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:00:06,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-28 09:00:06,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:00:06,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:00:06,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-28 09:00:06,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:00:07,560 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:00:07,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:00:07,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651053654] [2021-10-28 09:00:07,560 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:00:07,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701921772] [2021-10-28 09:00:07,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701921772] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:00:07,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:00:07,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 09:00:07,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095226847] [2021-10-28 09:00:07,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:00:07,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:00:07,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:00:07,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:00:07,563 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 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) [2021-10-28 09:00:07,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:00:07,887 INFO L93 Difference]: Finished difference Result 104 states and 107 transitions. [2021-10-28 09:00:07,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:00:07,891 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 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 43 [2021-10-28 09:00:07,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:00:07,892 INFO L225 Difference]: With dead ends: 104 [2021-10-28 09:00:07,892 INFO L226 Difference]: Without dead ends: 102 [2021-10-28 09:00:07,892 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:00:07,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-28 09:00:07,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 88. [2021-10-28 09:00:07,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 81 states have (on average 1.1358024691358024) internal successors, (92), 87 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:00:07,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2021-10-28 09:00:07,907 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 43 [2021-10-28 09:00:07,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:00:07,907 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2021-10-28 09:00:07,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 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) [2021-10-28 09:00:07,907 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2021-10-28 09:00:07,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-28 09:00:07,909 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:00:07,909 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2021-10-28 09:00:07,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-28 09:00:08,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:00:08,127 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:00:08,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:00:08,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1212527061, now seen corresponding path program 3 times [2021-10-28 09:00:08,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:00:08,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881334324] [2021-10-28 09:00:08,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:00:08,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:00:08,142 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:00:08,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1118670947] [2021-10-28 09:00:08,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:00:08,144 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:00:08,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:00:08,145 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:00:08,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-28 09:00:08,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-28 09:00:08,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:00:08,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-28 09:00:08,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:00:08,886 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-28 09:00:08,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:00:08,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881334324] [2021-10-28 09:00:08,887 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:00:08,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118670947] [2021-10-28 09:00:08,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118670947] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:00:08,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:00:08,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 09:00:08,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228021893] [2021-10-28 09:00:08,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:00:08,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:00:08,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:00:08,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:00:08,889 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 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) [2021-10-28 09:00:11,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:00:11,268 INFO L93 Difference]: Finished difference Result 88 states and 92 transitions. [2021-10-28 09:00:11,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:00:11,268 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 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 44 [2021-10-28 09:00:11,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:00:11,269 INFO L225 Difference]: With dead ends: 88 [2021-10-28 09:00:11,269 INFO L226 Difference]: Without dead ends: 70 [2021-10-28 09:00:11,270 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:00:11,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-28 09:00:11,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2021-10-28 09:00:11,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 62 states have (on average 1.064516129032258) internal successors, (66), 63 states have internal predecessors, (66), 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) [2021-10-28 09:00:11,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2021-10-28 09:00:11,282 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 44 [2021-10-28 09:00:11,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:00:11,282 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2021-10-28 09:00:11,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 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) [2021-10-28 09:00:11,282 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2021-10-28 09:00:11,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-28 09:00:11,283 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:00:11,283 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:00:11,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-28 09:00:11,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:00:11,489 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:00:11,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:00:11,490 INFO L85 PathProgramCache]: Analyzing trace with hash 2059495850, now seen corresponding path program 2 times [2021-10-28 09:00:11,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:00:11,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769760859] [2021-10-28 09:00:11,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:00:11,490 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:00:11,510 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:00:11,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1696633476] [2021-10-28 09:00:11,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:00:11,510 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:00:11,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:00:11,511 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:00:11,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-28 09:00:13,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 09:00:13,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:00:13,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-28 09:00:13,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:00:27,150 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-28 09:00:27,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:00:27,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769760859] [2021-10-28 09:00:27,151 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:00:27,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696633476] [2021-10-28 09:00:27,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696633476] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:00:27,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:00:27,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-10-28 09:00:27,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432323176] [2021-10-28 09:00:27,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:00:27,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:00:27,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:00:27,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:00:27,153 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:11,831 WARN L207 SmtUtils]: Spent 5.15 s on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2021-10-28 09:01:26,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:01:26,210 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2021-10-28 09:01:26,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:01:26,211 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-28 09:01:26,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:01:26,211 INFO L225 Difference]: With dead ends: 74 [2021-10-28 09:01:26,211 INFO L226 Difference]: Without dead ends: 66 [2021-10-28 09:01:26,212 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2021-10-28 09:01:26,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-28 09:01:26,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2021-10-28 09:01:26,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 63 states have internal predecessors, (65), 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) [2021-10-28 09:01:26,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2021-10-28 09:01:26,224 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 45 [2021-10-28 09:01:26,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:01:26,225 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2021-10-28 09:01:26,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:26,225 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2021-10-28 09:01:26,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-28 09:01:26,225 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:01:26,226 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:01:26,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:26,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-28 09:01:26,435 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:01:26,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:26,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1070984318, now seen corresponding path program 3 times [2021-10-28 09:01:26,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:01:26,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265965119] [2021-10-28 09:01:26,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:26,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:01:26,448 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:01:26,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1860101480] [2021-10-28 09:01:26,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:01:26,448 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:01:26,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:26,456 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:01:26,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-28 09:01:27,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-28 09:01:27,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:01:27,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:01:27,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:01:27,186 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:01:27,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:01:27,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265965119] [2021-10-28 09:01:27,186 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:01:27,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860101480] [2021-10-28 09:01:27,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860101480] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:01:27,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:01:27,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 09:01:27,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93311042] [2021-10-28 09:01:27,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:01:27,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:01:27,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:01:27,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:01:27,188 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 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) [2021-10-28 09:01:27,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:01:27,274 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2021-10-28 09:01:27,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:01:27,274 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 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 45 [2021-10-28 09:01:27,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:01:27,275 INFO L225 Difference]: With dead ends: 76 [2021-10-28 09:01:27,275 INFO L226 Difference]: Without dead ends: 66 [2021-10-28 09:01:27,276 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:01:27,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-28 09:01:27,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-10-28 09:01:27,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 64 states have (on average 1.046875) internal successors, (67), 65 states have internal predecessors, (67), 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) [2021-10-28 09:01:27,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2021-10-28 09:01:27,289 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 45 [2021-10-28 09:01:27,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:01:27,290 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2021-10-28 09:01:27,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 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) [2021-10-28 09:01:27,290 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2021-10-28 09:01:27,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-28 09:01:27,291 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:01:27,291 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:01:27,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:27,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:01:27,507 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:01:27,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:27,507 INFO L85 PathProgramCache]: Analyzing trace with hash -655791985, now seen corresponding path program 3 times [2021-10-28 09:01:27,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:01:27,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389867740] [2021-10-28 09:01:27,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:27,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:01:27,520 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:01:27,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1549461538] [2021-10-28 09:01:27,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:01:27,521 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:01:27,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:27,522 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:01:27,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-28 09:01:29,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-28 09:01:29,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:01:29,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-28 09:01:29,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:01:49,690 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-28 09:01:49,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:01:49,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389867740] [2021-10-28 09:01:49,691 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:01:49,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549461538] [2021-10-28 09:01:49,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549461538] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:01:49,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:01:49,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-10-28 09:01:49,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39395265] [2021-10-28 09:01:49,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-28 09:01:49,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:01:49,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-28 09:01:49,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=257, Unknown=4, NotChecked=0, Total=342 [2021-10-28 09:01:49,693 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 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) [2021-10-28 09:02:34,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:02:34,245 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2021-10-28 09:02:34,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:02:34,246 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 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 55 [2021-10-28 09:02:34,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:02:34,246 INFO L225 Difference]: With dead ends: 68 [2021-10-28 09:02:34,246 INFO L226 Difference]: Without dead ends: 62 [2021-10-28 09:02:34,247 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=119, Invalid=338, Unknown=5, NotChecked=0, Total=462 [2021-10-28 09:02:34,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-28 09:02:34,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-10-28 09:02:34,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 61 states have internal predecessors, (62), 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) [2021-10-28 09:02:34,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2021-10-28 09:02:34,256 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 55 [2021-10-28 09:02:34,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:02:34,256 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2021-10-28 09:02:34,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 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) [2021-10-28 09:02:34,256 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2021-10-28 09:02:34,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-28 09:02:34,256 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:02:34,256 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:02:34,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:34,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:02:34,457 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:02:34,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:34,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1986227318, now seen corresponding path program 4 times [2021-10-28 09:02:34,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:34,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242684903] [2021-10-28 09:02:34,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:34,458 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:34,476 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:02:34,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1810705718] [2021-10-28 09:02:34,476 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:02:34,476 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:02:34,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:34,480 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:02:34,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-28 09:02:35,064 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:02:35,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:02:35,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:02:35,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:02:35,255 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:02:35,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:02:35,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242684903] [2021-10-28 09:02:35,255 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:02:35,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810705718] [2021-10-28 09:02:35,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810705718] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:02:35,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:02:35,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 09:02:35,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597351936] [2021-10-28 09:02:35,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:02:35,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:02:35,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:02:35,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:02:35,257 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 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) [2021-10-28 09:02:35,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:02:35,326 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2021-10-28 09:02:35,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:02:35,327 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 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 57 [2021-10-28 09:02:35,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:02:35,327 INFO L225 Difference]: With dead ends: 84 [2021-10-28 09:02:35,327 INFO L226 Difference]: Without dead ends: 74 [2021-10-28 09:02:35,328 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:02:35,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-28 09:02:35,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-28 09:02:35,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 73 states have internal predecessors, (74), 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) [2021-10-28 09:02:35,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2021-10-28 09:02:35,347 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 57 [2021-10-28 09:02:35,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:02:35,347 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2021-10-28 09:02:35,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 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) [2021-10-28 09:02:35,348 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2021-10-28 09:02:35,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-28 09:02:35,348 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:02:35,348 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:02:35,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:35,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:02:35,575 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:02:35,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:35,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1352185966, now seen corresponding path program 5 times [2021-10-28 09:02:35,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:35,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113128605] [2021-10-28 09:02:35,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:35,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:35,585 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:02:35,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [892909067] [2021-10-28 09:02:35,585 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:02:35,585 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:02:35,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:35,587 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:02:35,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-28 09:02:36,216 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-28 09:02:36,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:02:36,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 09:02:36,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:02:36,448 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:02:36,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:02:36,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113128605] [2021-10-28 09:02:36,449 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:02:36,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892909067] [2021-10-28 09:02:36,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892909067] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:02:36,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:02:36,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 09:02:36,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24638883] [2021-10-28 09:02:36,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:02:36,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:02:36,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:02:36,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:02:36,451 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 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) [2021-10-28 09:02:36,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:02:36,517 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2021-10-28 09:02:36,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 09:02:36,519 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 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 69 [2021-10-28 09:02:36,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:02:36,520 INFO L225 Difference]: With dead ends: 96 [2021-10-28 09:02:36,520 INFO L226 Difference]: Without dead ends: 86 [2021-10-28 09:02:36,521 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:02:36,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-28 09:02:36,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-10-28 09:02:36,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 85 states have internal predecessors, (86), 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) [2021-10-28 09:02:36,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2021-10-28 09:02:36,540 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 69 [2021-10-28 09:02:36,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:02:36,540 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2021-10-28 09:02:36,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 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) [2021-10-28 09:02:36,540 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2021-10-28 09:02:36,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-28 09:02:36,541 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:02:36,541 INFO L513 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:02:36,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:36,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-28 09:02:36,761 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:02:36,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:36,761 INFO L85 PathProgramCache]: Analyzing trace with hash 182202266, now seen corresponding path program 6 times [2021-10-28 09:02:36,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:36,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639724296] [2021-10-28 09:02:36,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:36,762 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:36,783 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:02:36,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1306400180] [2021-10-28 09:02:36,784 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:02:36,784 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:02:36,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:36,785 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:02:36,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-28 09:02:38,249 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-28 09:02:38,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:02:38,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 09:02:38,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:02:38,566 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:02:38,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:02:38,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639724296] [2021-10-28 09:02:38,567 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:02:38,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306400180] [2021-10-28 09:02:38,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306400180] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:02:38,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:02:38,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-28 09:02:38,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496817895] [2021-10-28 09:02:38,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:02:38,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:02:38,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:02:38,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:02:38,568 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 9 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) [2021-10-28 09:02:38,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:02:38,663 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2021-10-28 09:02:38,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 09:02:38,664 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 9 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 [2021-10-28 09:02:38,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:02:38,665 INFO L225 Difference]: With dead ends: 108 [2021-10-28 09:02:38,665 INFO L226 Difference]: Without dead ends: 98 [2021-10-28 09:02:38,666 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2021-10-28 09:02:38,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-28 09:02:38,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-10-28 09:02:38,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 97 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:02:38,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2021-10-28 09:02:38,687 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 81 [2021-10-28 09:02:38,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:02:38,688 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2021-10-28 09:02:38,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 9 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) [2021-10-28 09:02:38,688 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2021-10-28 09:02:38,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-28 09:02:38,689 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:02:38,689 INFO L513 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:02:38,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:38,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-28 09:02:38,889 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:02:38,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:38,890 INFO L85 PathProgramCache]: Analyzing trace with hash 172837794, now seen corresponding path program 7 times [2021-10-28 09:02:38,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:38,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702832308] [2021-10-28 09:02:38,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:38,890 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:38,905 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:02:38,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [701269495] [2021-10-28 09:02:38,906 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:02:38,906 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:02:38,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:38,913 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:02:38,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-28 09:02:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:02:39,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 09:02:39,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:02:39,883 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 266 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:02:39,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:02:39,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702832308] [2021-10-28 09:02:39,884 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:02:39,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701269495] [2021-10-28 09:02:39,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701269495] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:02:39,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:02:39,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-28 09:02:39,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330228484] [2021-10-28 09:02:39,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:02:39,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:02:39,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:02:39,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:02:39,886 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 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) [2021-10-28 09:02:39,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:02:39,977 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2021-10-28 09:02:39,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:02:39,977 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 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 93 [2021-10-28 09:02:39,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:02:39,978 INFO L225 Difference]: With dead ends: 120 [2021-10-28 09:02:39,978 INFO L226 Difference]: Without dead ends: 110 [2021-10-28 09:02:39,979 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2021-10-28 09:02:39,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-28 09:02:40,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-10-28 09:02:40,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 108 states have (on average 1.0185185185185186) internal successors, (110), 109 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:02:40,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2021-10-28 09:02:40,009 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 93 [2021-10-28 09:02:40,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:02:40,009 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2021-10-28 09:02:40,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 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) [2021-10-28 09:02:40,010 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2021-10-28 09:02:40,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-28 09:02:40,010 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:02:40,011 INFO L513 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:02:40,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:40,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-10-28 09:02:40,217 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:02:40,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:40,217 INFO L85 PathProgramCache]: Analyzing trace with hash 822909866, now seen corresponding path program 8 times [2021-10-28 09:02:40,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:40,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897072307] [2021-10-28 09:02:40,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:40,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:40,228 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:02:40,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [197393242] [2021-10-28 09:02:40,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:02:40,229 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:02:40,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:40,230 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:02:40,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-28 09:02:40,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:02:40,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:02:40,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 09:02:40,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:02:41,339 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:02:41,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:02:41,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897072307] [2021-10-28 09:02:41,339 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:02:41,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197393242] [2021-10-28 09:02:41,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197393242] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:02:41,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:02:41,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-28 09:02:41,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071685063] [2021-10-28 09:02:41,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:02:41,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:02:41,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:02:41,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:02:41,341 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand has 12 states, 12 states have (on average 8.75) internal successors, (105), 11 states have internal predecessors, (105), 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) [2021-10-28 09:02:41,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:02:41,451 INFO L93 Difference]: Finished difference Result 132 states and 132 transitions. [2021-10-28 09:02:41,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-28 09:02:41,452 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 11 states have internal predecessors, (105), 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 105 [2021-10-28 09:02:41,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:02:41,453 INFO L225 Difference]: With dead ends: 132 [2021-10-28 09:02:41,453 INFO L226 Difference]: Without dead ends: 122 [2021-10-28 09:02:41,453 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2021-10-28 09:02:41,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-28 09:02:41,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-10-28 09:02:41,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 120 states have (on average 1.0166666666666666) internal successors, (122), 121 states have internal predecessors, (122), 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) [2021-10-28 09:02:41,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2021-10-28 09:02:41,480 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 105 [2021-10-28 09:02:41,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:02:41,481 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2021-10-28 09:02:41,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 11 states have internal predecessors, (105), 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) [2021-10-28 09:02:41,481 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2021-10-28 09:02:41,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-28 09:02:41,482 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:02:41,482 INFO L513 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:02:41,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:41,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:02:41,707 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:02:41,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:41,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1754521678, now seen corresponding path program 9 times [2021-10-28 09:02:41,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:41,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136247975] [2021-10-28 09:02:41,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:41,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:41,725 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:02:41,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1081376879] [2021-10-28 09:02:41,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:02:41,726 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:02:41,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:41,730 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:02:41,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-28 09:02:42,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-10-28 09:02:42,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:02:42,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 09:02:42,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:02:42,927 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:02:42,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:02:42,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136247975] [2021-10-28 09:02:42,927 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:02:42,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081376879] [2021-10-28 09:02:42,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081376879] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:02:42,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:02:42,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-28 09:02:42,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433234730] [2021-10-28 09:02:42,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:02:42,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:02:42,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:02:42,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:02:42,929 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand has 13 states, 13 states have (on average 9.0) internal successors, (117), 12 states have internal predecessors, (117), 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) [2021-10-28 09:02:43,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:02:43,069 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2021-10-28 09:02:43,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-28 09:02:43,070 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.0) internal successors, (117), 12 states have internal predecessors, (117), 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 117 [2021-10-28 09:02:43,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:02:43,071 INFO L225 Difference]: With dead ends: 144 [2021-10-28 09:02:43,071 INFO L226 Difference]: Without dead ends: 134 [2021-10-28 09:02:43,071 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=176, Invalid=286, Unknown=0, NotChecked=0, Total=462 [2021-10-28 09:02:43,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-28 09:02:43,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-10-28 09:02:43,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 132 states have (on average 1.0151515151515151) internal successors, (134), 133 states have internal predecessors, (134), 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) [2021-10-28 09:02:43,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2021-10-28 09:02:43,099 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 117 [2021-10-28 09:02:43,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:02:43,100 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2021-10-28 09:02:43,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.0) internal successors, (117), 12 states have internal predecessors, (117), 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) [2021-10-28 09:02:43,100 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2021-10-28 09:02:43,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-10-28 09:02:43,102 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:02:43,102 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:02:43,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-10-28 09:02:43,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-28 09:02:43,327 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:02:43,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:43,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1790826426, now seen corresponding path program 10 times [2021-10-28 09:02:43,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:43,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351010374] [2021-10-28 09:02:43,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:43,328 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:43,341 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:02:43,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1823183894] [2021-10-28 09:02:43,341 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:02:43,342 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:02:43,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:43,349 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:02:43,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-28 09:02:44,176 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:02:44,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:02:44,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-28 09:02:44,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:02:44,664 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:02:44,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:02:44,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351010374] [2021-10-28 09:02:44,664 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:02:44,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823183894] [2021-10-28 09:02:44,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823183894] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:02:44,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:02:44,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-28 09:02:44,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842451569] [2021-10-28 09:02:44,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:02:44,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:02:44,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:02:44,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:02:44,666 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 13 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:02:44,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:02:44,824 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2021-10-28 09:02:44,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-28 09:02:44,824 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 13 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-10-28 09:02:44,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:02:44,826 INFO L225 Difference]: With dead ends: 156 [2021-10-28 09:02:44,826 INFO L226 Difference]: Without dead ends: 146 [2021-10-28 09:02:44,826 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=210, Invalid=342, Unknown=0, NotChecked=0, Total=552 [2021-10-28 09:02:44,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-28 09:02:44,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-10-28 09:02:44,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 144 states have (on average 1.0138888888888888) internal successors, (146), 145 states have internal predecessors, (146), 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) [2021-10-28 09:02:44,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2021-10-28 09:02:44,851 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 129 [2021-10-28 09:02:44,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:02:44,851 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2021-10-28 09:02:44,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 13 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:02:44,851 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2021-10-28 09:02:44,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-10-28 09:02:44,853 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:02:44,853 INFO L513 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:02:44,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:45,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-28 09:02:45,059 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:02:45,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:45,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1834206146, now seen corresponding path program 11 times [2021-10-28 09:02:45,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:45,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624681750] [2021-10-28 09:02:45,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:45,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:45,071 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:02:45,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1046310138] [2021-10-28 09:02:45,071 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:02:45,071 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:02:45,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:45,073 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:02:45,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-28 09:02:47,707 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-10-28 09:02:47,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:02:47,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-28 09:02:47,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:02:48,176 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 0 proven. 682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:02:48,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:02:48,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624681750] [2021-10-28 09:02:48,177 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:02:48,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046310138] [2021-10-28 09:02:48,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046310138] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:02:48,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:02:48,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-10-28 09:02:48,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846901023] [2021-10-28 09:02:48,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 09:02:48,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:02:48,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 09:02:48,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:02:48,178 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand has 15 states, 15 states have (on average 9.4) internal successors, (141), 14 states have internal predecessors, (141), 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) [2021-10-28 09:02:48,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:02:48,355 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions. [2021-10-28 09:02:48,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-28 09:02:48,356 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.4) internal successors, (141), 14 states have internal predecessors, (141), 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 141 [2021-10-28 09:02:48,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:02:48,357 INFO L225 Difference]: With dead ends: 168 [2021-10-28 09:02:48,357 INFO L226 Difference]: Without dead ends: 158 [2021-10-28 09:02:48,357 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=247, Invalid=403, Unknown=0, NotChecked=0, Total=650 [2021-10-28 09:02:48,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-28 09:02:48,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-10-28 09:02:48,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 156 states have (on average 1.0128205128205128) internal successors, (158), 157 states have internal predecessors, (158), 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) [2021-10-28 09:02:48,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2021-10-28 09:02:48,388 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 141 [2021-10-28 09:02:48,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:02:48,388 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2021-10-28 09:02:48,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.4) internal successors, (141), 14 states have internal predecessors, (141), 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) [2021-10-28 09:02:48,388 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2021-10-28 09:02:48,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-10-28 09:02:48,389 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:02:48,389 INFO L513 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:02:48,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:48,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-28 09:02:48,590 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:02:48,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:48,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1988092874, now seen corresponding path program 12 times [2021-10-28 09:02:48,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:48,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071996197] [2021-10-28 09:02:48,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:48,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:48,601 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:02:48,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1353601049] [2021-10-28 09:02:48,602 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:02:48,602 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:02:48,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:48,603 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:02:48,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-28 09:02:49,599 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-10-28 09:02:49,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:02:49,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-28 09:02:49,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:02:50,153 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 0 proven. 816 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:02:50,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:02:50,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071996197] [2021-10-28 09:02:50,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:02:50,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353601049] [2021-10-28 09:02:50,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353601049] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:02:50,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:02:50,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-10-28 09:02:50,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703642083] [2021-10-28 09:02:50,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-28 09:02:50,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:02:50,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 09:02:50,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-10-28 09:02:50,156 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand has 16 states, 16 states have (on average 9.5625) internal successors, (153), 15 states have internal predecessors, (153), 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) [2021-10-28 09:02:50,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:02:50,344 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2021-10-28 09:02:50,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-28 09:02:50,350 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.5625) internal successors, (153), 15 states have internal predecessors, (153), 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 153 [2021-10-28 09:02:50,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:02:50,352 INFO L225 Difference]: With dead ends: 180 [2021-10-28 09:02:50,352 INFO L226 Difference]: Without dead ends: 170 [2021-10-28 09:02:50,353 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=287, Invalid=469, Unknown=0, NotChecked=0, Total=756 [2021-10-28 09:02:50,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-10-28 09:02:50,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-10-28 09:02:50,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 168 states have (on average 1.0119047619047619) internal successors, (170), 169 states have internal predecessors, (170), 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) [2021-10-28 09:02:50,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2021-10-28 09:02:50,391 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 153 [2021-10-28 09:02:50,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:02:50,391 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2021-10-28 09:02:50,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.5625) internal successors, (153), 15 states have internal predecessors, (153), 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) [2021-10-28 09:02:50,392 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2021-10-28 09:02:50,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-10-28 09:02:50,394 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:02:50,394 INFO L513 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:02:50,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:50,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-28 09:02:50,604 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:02:50,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:50,604 INFO L85 PathProgramCache]: Analyzing trace with hash -225167406, now seen corresponding path program 13 times [2021-10-28 09:02:50,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:50,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240419160] [2021-10-28 09:02:50,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:50,605 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:50,633 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:02:50,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1405909265] [2021-10-28 09:02:50,633 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:02:50,634 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:02:50,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:50,635 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:02:50,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-28 09:02:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:02:51,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-28 09:02:51,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:02:52,144 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 0 proven. 962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:02:52,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:02:52,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240419160] [2021-10-28 09:02:52,145 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:02:52,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405909265] [2021-10-28 09:02:52,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405909265] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:02:52,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:02:52,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-10-28 09:02:52,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176620324] [2021-10-28 09:02:52,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-28 09:02:52,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:02:52,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-28 09:02:52,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-10-28 09:02:52,147 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand has 17 states, 17 states have (on average 9.705882352941176) internal successors, (165), 16 states have internal predecessors, (165), 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) [2021-10-28 09:02:52,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:02:52,366 INFO L93 Difference]: Finished difference Result 192 states and 192 transitions. [2021-10-28 09:02:52,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-28 09:02:52,367 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 9.705882352941176) internal successors, (165), 16 states have internal predecessors, (165), 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 165 [2021-10-28 09:02:52,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:02:52,369 INFO L225 Difference]: With dead ends: 192 [2021-10-28 09:02:52,369 INFO L226 Difference]: Without dead ends: 182 [2021-10-28 09:02:52,370 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=330, Invalid=540, Unknown=0, NotChecked=0, Total=870 [2021-10-28 09:02:52,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-28 09:02:52,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-10-28 09:02:52,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 180 states have (on average 1.011111111111111) internal successors, (182), 181 states have internal predecessors, (182), 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) [2021-10-28 09:02:52,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2021-10-28 09:02:52,408 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 165 [2021-10-28 09:02:52,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:02:52,409 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2021-10-28 09:02:52,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.705882352941176) internal successors, (165), 16 states have internal predecessors, (165), 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) [2021-10-28 09:02:52,409 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2021-10-28 09:02:52,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-10-28 09:02:52,411 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:02:52,411 INFO L513 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:02:52,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:52,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:02:52,635 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:02:52,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:52,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1659027418, now seen corresponding path program 14 times [2021-10-28 09:02:52,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:52,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460132803] [2021-10-28 09:02:52,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:52,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:52,655 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:02:52,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1432456589] [2021-10-28 09:02:52,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:02:52,656 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:02:52,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:52,657 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:02:52,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-28 09:02:53,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:02:53,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:02:53,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-28 09:02:53,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:02:54,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1120 backedges. 0 proven. 1120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:02:54,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:02:54,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460132803] [2021-10-28 09:02:54,272 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:02:54,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432456589] [2021-10-28 09:02:54,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432456589] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:02:54,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:02:54,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-10-28 09:02:54,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855400387] [2021-10-28 09:02:54,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-28 09:02:54,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:02:54,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-28 09:02:54,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-10-28 09:02:54,274 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand has 18 states, 18 states have (on average 9.833333333333334) internal successors, (177), 17 states have internal predecessors, (177), 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) [2021-10-28 09:02:54,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:02:54,511 INFO L93 Difference]: Finished difference Result 204 states and 204 transitions. [2021-10-28 09:02:54,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-28 09:02:54,512 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 9.833333333333334) internal successors, (177), 17 states have internal predecessors, (177), 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 177 [2021-10-28 09:02:54,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:02:54,513 INFO L225 Difference]: With dead ends: 204 [2021-10-28 09:02:54,513 INFO L226 Difference]: Without dead ends: 194 [2021-10-28 09:02:54,514 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=376, Invalid=616, Unknown=0, NotChecked=0, Total=992 [2021-10-28 09:02:54,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-10-28 09:02:54,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2021-10-28 09:02:54,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 192 states have (on average 1.0104166666666667) internal successors, (194), 193 states have internal predecessors, (194), 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) [2021-10-28 09:02:54,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2021-10-28 09:02:54,563 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 177 [2021-10-28 09:02:54,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:02:54,564 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2021-10-28 09:02:54,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.833333333333334) internal successors, (177), 17 states have internal predecessors, (177), 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) [2021-10-28 09:02:54,564 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2021-10-28 09:02:54,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-10-28 09:02:54,567 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:02:54,567 INFO L513 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:02:54,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:54,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-10-28 09:02:54,783 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:02:54,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:54,783 INFO L85 PathProgramCache]: Analyzing trace with hash -574784542, now seen corresponding path program 15 times [2021-10-28 09:02:54,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:54,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805784933] [2021-10-28 09:02:54,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:54,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:54,815 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:02:54,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1376552030] [2021-10-28 09:02:54,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:02:54,816 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:02:54,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:54,817 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:02:54,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-28 09:02:56,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-10-28 09:02:56,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:02:56,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-28 09:02:56,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:02:56,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1290 backedges. 0 proven. 1290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:02:56,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:02:56,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805784933] [2021-10-28 09:02:56,741 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:02:56,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376552030] [2021-10-28 09:02:56,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376552030] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:02:56,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:02:56,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-10-28 09:02:56,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912640749] [2021-10-28 09:02:56,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-28 09:02:56,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:02:56,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-28 09:02:56,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:02:56,743 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand has 19 states, 19 states have (on average 9.947368421052632) internal successors, (189), 18 states have internal predecessors, (189), 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) [2021-10-28 09:02:56,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:02:56,999 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2021-10-28 09:02:56,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-28 09:02:56,999 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.947368421052632) internal successors, (189), 18 states have internal predecessors, (189), 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 189 [2021-10-28 09:02:57,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:02:57,005 INFO L225 Difference]: With dead ends: 216 [2021-10-28 09:02:57,006 INFO L226 Difference]: Without dead ends: 206 [2021-10-28 09:02:57,008 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=425, Invalid=697, Unknown=0, NotChecked=0, Total=1122 [2021-10-28 09:02:57,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-10-28 09:02:57,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2021-10-28 09:02:57,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 204 states have (on average 1.0098039215686274) internal successors, (206), 205 states have internal predecessors, (206), 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) [2021-10-28 09:02:57,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2021-10-28 09:02:57,053 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 189 [2021-10-28 09:02:57,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:02:57,053 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2021-10-28 09:02:57,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.947368421052632) internal successors, (189), 18 states have internal predecessors, (189), 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) [2021-10-28 09:02:57,054 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2021-10-28 09:02:57,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-10-28 09:02:57,057 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:02:57,057 INFO L513 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:02:57,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:57,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-10-28 09:02:57,283 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:02:57,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:57,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1904841750, now seen corresponding path program 16 times [2021-10-28 09:02:57,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:57,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482794375] [2021-10-28 09:02:57,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:57,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:57,324 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:02:57,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [164419501] [2021-10-28 09:02:57,325 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:02:57,325 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:02:57,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:57,326 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:02:57,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-28 09:02:58,705 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:02:58,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:02:58,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-28 09:02:58,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:02:59,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1472 backedges. 0 proven. 1472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:02:59,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:02:59,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482794375] [2021-10-28 09:02:59,468 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:02:59,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164419501] [2021-10-28 09:02:59,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164419501] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:02:59,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:02:59,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-10-28 09:02:59,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982469572] [2021-10-28 09:02:59,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-28 09:02:59,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:02:59,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-28 09:02:59,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2021-10-28 09:02:59,470 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand has 20 states, 20 states have (on average 10.05) internal successors, (201), 19 states have internal predecessors, (201), 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) [2021-10-28 09:02:59,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:02:59,742 INFO L93 Difference]: Finished difference Result 228 states and 228 transitions. [2021-10-28 09:02:59,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-28 09:02:59,743 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 10.05) internal successors, (201), 19 states have internal predecessors, (201), 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 201 [2021-10-28 09:02:59,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:02:59,744 INFO L225 Difference]: With dead ends: 228 [2021-10-28 09:02:59,745 INFO L226 Difference]: Without dead ends: 218 [2021-10-28 09:02:59,745 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=477, Invalid=783, Unknown=0, NotChecked=0, Total=1260 [2021-10-28 09:02:59,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-10-28 09:02:59,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-10-28 09:02:59,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 216 states have (on average 1.0092592592592593) internal successors, (218), 217 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:02:59,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2021-10-28 09:02:59,800 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 201 [2021-10-28 09:02:59,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:02:59,800 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2021-10-28 09:02:59,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.05) internal successors, (201), 19 states have internal predecessors, (201), 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) [2021-10-28 09:02:59,801 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2021-10-28 09:02:59,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-10-28 09:02:59,802 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:02:59,802 INFO L513 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:02:59,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:00,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:00,015 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:03:00,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:00,015 INFO L85 PathProgramCache]: Analyzing trace with hash 895455218, now seen corresponding path program 17 times [2021-10-28 09:03:00,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:00,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26958373] [2021-10-28 09:03:00,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:00,016 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:00,030 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:03:00,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1375056149] [2021-10-28 09:03:00,031 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:03:00,031 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:00,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:00,034 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:00,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-28 09:03:02,271 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-10-28 09:03:02,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:02,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-28 09:03:02,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:03,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1666 backedges. 0 proven. 1666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:03,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:03,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26958373] [2021-10-28 09:03:03,063 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:03:03,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375056149] [2021-10-28 09:03:03,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375056149] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:03,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:03:03,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-10-28 09:03:03,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997901] [2021-10-28 09:03:03,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-28 09:03:03,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:03,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-28 09:03:03,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2021-10-28 09:03:03,065 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand has 21 states, 21 states have (on average 10.142857142857142) internal successors, (213), 20 states have internal predecessors, (213), 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) [2021-10-28 09:03:03,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:03,348 INFO L93 Difference]: Finished difference Result 240 states and 240 transitions. [2021-10-28 09:03:03,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-28 09:03:03,348 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 10.142857142857142) internal successors, (213), 20 states have internal predecessors, (213), 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 213 [2021-10-28 09:03:03,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:03:03,349 INFO L225 Difference]: With dead ends: 240 [2021-10-28 09:03:03,349 INFO L226 Difference]: Without dead ends: 230 [2021-10-28 09:03:03,350 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=532, Invalid=874, Unknown=0, NotChecked=0, Total=1406 [2021-10-28 09:03:03,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-10-28 09:03:03,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2021-10-28 09:03:03,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 228 states have (on average 1.0087719298245614) internal successors, (230), 229 states have internal predecessors, (230), 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) [2021-10-28 09:03:03,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2021-10-28 09:03:03,390 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 213 [2021-10-28 09:03:03,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:03:03,391 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2021-10-28 09:03:03,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.142857142857142) internal successors, (213), 20 states have internal predecessors, (213), 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) [2021-10-28 09:03:03,391 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2021-10-28 09:03:03,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-10-28 09:03:03,393 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:03:03,393 INFO L513 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:03,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:03,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:03,605 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:03:03,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:03,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1479874566, now seen corresponding path program 18 times [2021-10-28 09:03:03,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:03,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333054422] [2021-10-28 09:03:03,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:03,605 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:03,620 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:03:03,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1530298685] [2021-10-28 09:03:03,620 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:03:03,620 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:03,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:03,621 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:03,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-28 09:03:05,885 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-10-28 09:03:05,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:05,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-28 09:03:05,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:06,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 0 proven. 1872 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:06,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:06,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333054422] [2021-10-28 09:03:06,667 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:03:06,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530298685] [2021-10-28 09:03:06,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530298685] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:06,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:03:06,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-10-28 09:03:06,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993566379] [2021-10-28 09:03:06,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-28 09:03:06,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:06,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-28 09:03:06,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-10-28 09:03:06,669 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand has 22 states, 22 states have (on average 10.227272727272727) internal successors, (225), 21 states have internal predecessors, (225), 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) [2021-10-28 09:03:07,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:07,020 INFO L93 Difference]: Finished difference Result 252 states and 252 transitions. [2021-10-28 09:03:07,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-28 09:03:07,021 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 10.227272727272727) internal successors, (225), 21 states have internal predecessors, (225), 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 225 [2021-10-28 09:03:07,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:03:07,023 INFO L225 Difference]: With dead ends: 252 [2021-10-28 09:03:07,023 INFO L226 Difference]: Without dead ends: 242 [2021-10-28 09:03:07,024 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=590, Invalid=970, Unknown=0, NotChecked=0, Total=1560 [2021-10-28 09:03:07,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-10-28 09:03:07,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-10-28 09:03:07,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 240 states have (on average 1.0083333333333333) internal successors, (242), 241 states have internal predecessors, (242), 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) [2021-10-28 09:03:07,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 242 transitions. [2021-10-28 09:03:07,075 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 242 transitions. Word has length 225 [2021-10-28 09:03:07,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:03:07,075 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 242 transitions. [2021-10-28 09:03:07,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.227272727272727) internal successors, (225), 21 states have internal predecessors, (225), 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) [2021-10-28 09:03:07,075 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 242 transitions. [2021-10-28 09:03:07,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-10-28 09:03:07,077 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:03:07,077 INFO L513 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:07,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:07,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-10-28 09:03:07,287 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:03:07,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:07,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1342862338, now seen corresponding path program 19 times [2021-10-28 09:03:07,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:07,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198427392] [2021-10-28 09:03:07,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:07,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:07,316 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:03:07,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [848192955] [2021-10-28 09:03:07,316 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:03:07,317 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:07,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:07,318 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:07,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-28 09:03:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:08,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-28 09:03:08,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:09,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2090 backedges. 0 proven. 2090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:09,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:09,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198427392] [2021-10-28 09:03:09,549 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:03:09,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848192955] [2021-10-28 09:03:09,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848192955] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:09,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:03:09,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-10-28 09:03:09,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514071422] [2021-10-28 09:03:09,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-28 09:03:09,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:09,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-28 09:03:09,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2021-10-28 09:03:09,552 INFO L87 Difference]: Start difference. First operand 242 states and 242 transitions. Second operand has 23 states, 23 states have (on average 10.304347826086957) internal successors, (237), 22 states have internal predecessors, (237), 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) [2021-10-28 09:03:09,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:09,886 INFO L93 Difference]: Finished difference Result 264 states and 264 transitions. [2021-10-28 09:03:09,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-28 09:03:09,886 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 10.304347826086957) internal successors, (237), 22 states have internal predecessors, (237), 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 237 [2021-10-28 09:03:09,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:03:09,887 INFO L225 Difference]: With dead ends: 264 [2021-10-28 09:03:09,887 INFO L226 Difference]: Without dead ends: 254 [2021-10-28 09:03:09,888 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=651, Invalid=1071, Unknown=0, NotChecked=0, Total=1722 [2021-10-28 09:03:09,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-10-28 09:03:09,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2021-10-28 09:03:09,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 252 states have (on average 1.007936507936508) internal successors, (254), 253 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:03:09,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 254 transitions. [2021-10-28 09:03:09,926 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 254 transitions. Word has length 237 [2021-10-28 09:03:09,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:03:09,926 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 254 transitions. [2021-10-28 09:03:09,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.304347826086957) internal successors, (237), 22 states have internal predecessors, (237), 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) [2021-10-28 09:03:09,927 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 254 transitions. [2021-10-28 09:03:09,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-10-28 09:03:09,928 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:03:09,928 INFO L513 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:09,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:10,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-10-28 09:03:10,143 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:03:10,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:10,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1385155574, now seen corresponding path program 20 times [2021-10-28 09:03:10,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:10,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851803526] [2021-10-28 09:03:10,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:10,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:10,166 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:03:10,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1329270376] [2021-10-28 09:03:10,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:03:10,167 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:10,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:10,168 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:10,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-28 09:03:11,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:03:11,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:11,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-28 09:03:11,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:12,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 0 proven. 2320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:12,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:12,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851803526] [2021-10-28 09:03:12,769 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:03:12,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329270376] [2021-10-28 09:03:12,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329270376] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:12,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:03:12,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2021-10-28 09:03:12,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693925370] [2021-10-28 09:03:12,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-28 09:03:12,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:12,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-28 09:03:12,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2021-10-28 09:03:12,771 INFO L87 Difference]: Start difference. First operand 254 states and 254 transitions. Second operand has 24 states, 24 states have (on average 10.375) internal successors, (249), 23 states have internal predecessors, (249), 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) [2021-10-28 09:03:13,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:13,121 INFO L93 Difference]: Finished difference Result 276 states and 276 transitions. [2021-10-28 09:03:13,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-28 09:03:13,121 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 10.375) internal successors, (249), 23 states have internal predecessors, (249), 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 249 [2021-10-28 09:03:13,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:03:13,123 INFO L225 Difference]: With dead ends: 276 [2021-10-28 09:03:13,123 INFO L226 Difference]: Without dead ends: 266 [2021-10-28 09:03:13,123 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=715, Invalid=1177, Unknown=0, NotChecked=0, Total=1892 [2021-10-28 09:03:13,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-10-28 09:03:13,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-10-28 09:03:13,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 264 states have (on average 1.0075757575757576) internal successors, (266), 265 states have internal predecessors, (266), 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) [2021-10-28 09:03:13,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 266 transitions. [2021-10-28 09:03:13,190 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 266 transitions. Word has length 249 [2021-10-28 09:03:13,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:03:13,190 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 266 transitions. [2021-10-28 09:03:13,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.375) internal successors, (249), 23 states have internal predecessors, (249), 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) [2021-10-28 09:03:13,191 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 266 transitions. [2021-10-28 09:03:13,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-10-28 09:03:13,193 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:03:13,193 INFO L513 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:13,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-10-28 09:03:13,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-10-28 09:03:13,394 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:03:13,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:13,394 INFO L85 PathProgramCache]: Analyzing trace with hash -733075438, now seen corresponding path program 21 times [2021-10-28 09:03:13,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:13,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692741982] [2021-10-28 09:03:13,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:13,395 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:13,424 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:03:13,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1020871656] [2021-10-28 09:03:13,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:03:13,424 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:13,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:13,428 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:13,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-28 09:03:15,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-10-28 09:03:15,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:15,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-28 09:03:15,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:16,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2562 backedges. 0 proven. 2562 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:16,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:16,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692741982] [2021-10-28 09:03:16,222 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:03:16,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020871656] [2021-10-28 09:03:16,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020871656] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:16,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:03:16,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2021-10-28 09:03:16,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904354931] [2021-10-28 09:03:16,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-28 09:03:16,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:16,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-28 09:03:16,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2021-10-28 09:03:16,225 INFO L87 Difference]: Start difference. First operand 266 states and 266 transitions. Second operand has 25 states, 25 states have (on average 10.44) internal successors, (261), 24 states have internal predecessors, (261), 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) [2021-10-28 09:03:16,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:16,618 INFO L93 Difference]: Finished difference Result 288 states and 288 transitions. [2021-10-28 09:03:16,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-28 09:03:16,619 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.44) internal successors, (261), 24 states have internal predecessors, (261), 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 261 [2021-10-28 09:03:16,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:03:16,620 INFO L225 Difference]: With dead ends: 288 [2021-10-28 09:03:16,620 INFO L226 Difference]: Without dead ends: 278 [2021-10-28 09:03:16,621 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=782, Invalid=1288, Unknown=0, NotChecked=0, Total=2070 [2021-10-28 09:03:16,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-10-28 09:03:16,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2021-10-28 09:03:16,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 276 states have (on average 1.0072463768115942) internal successors, (278), 277 states have internal predecessors, (278), 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) [2021-10-28 09:03:16,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 278 transitions. [2021-10-28 09:03:16,674 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 278 transitions. Word has length 261 [2021-10-28 09:03:16,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:03:16,675 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 278 transitions. [2021-10-28 09:03:16,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.44) internal successors, (261), 24 states have internal predecessors, (261), 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) [2021-10-28 09:03:16,675 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 278 transitions. [2021-10-28 09:03:16,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-10-28 09:03:16,677 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:03:16,677 INFO L513 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:16,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:16,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-28 09:03:16,903 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:03:16,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:16,903 INFO L85 PathProgramCache]: Analyzing trace with hash -302624742, now seen corresponding path program 22 times [2021-10-28 09:03:16,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:16,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76388960] [2021-10-28 09:03:16,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:16,904 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:16,923 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:03:16,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2023724627] [2021-10-28 09:03:16,923 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:03:16,924 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:16,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:16,925 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:16,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-28 09:03:18,482 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:03:18,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:18,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 918 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-28 09:03:18,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:19,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2816 backedges. 0 proven. 2816 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:19,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:19,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76388960] [2021-10-28 09:03:19,482 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:03:19,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023724627] [2021-10-28 09:03:19,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023724627] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:19,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:03:19,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2021-10-28 09:03:19,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995424934] [2021-10-28 09:03:19,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-28 09:03:19,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:19,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-28 09:03:19,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2021-10-28 09:03:19,484 INFO L87 Difference]: Start difference. First operand 278 states and 278 transitions. Second operand has 26 states, 26 states have (on average 10.5) internal successors, (273), 25 states have internal predecessors, (273), 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) [2021-10-28 09:03:19,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:19,890 INFO L93 Difference]: Finished difference Result 300 states and 300 transitions. [2021-10-28 09:03:19,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-28 09:03:19,891 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 10.5) internal successors, (273), 25 states have internal predecessors, (273), 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 273 [2021-10-28 09:03:19,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:03:19,892 INFO L225 Difference]: With dead ends: 300 [2021-10-28 09:03:19,893 INFO L226 Difference]: Without dead ends: 290 [2021-10-28 09:03:19,894 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=852, Invalid=1404, Unknown=0, NotChecked=0, Total=2256 [2021-10-28 09:03:19,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-10-28 09:03:19,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-10-28 09:03:19,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 288 states have (on average 1.0069444444444444) internal successors, (290), 289 states have internal predecessors, (290), 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) [2021-10-28 09:03:19,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 290 transitions. [2021-10-28 09:03:19,956 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 290 transitions. Word has length 273 [2021-10-28 09:03:19,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:03:19,956 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 290 transitions. [2021-10-28 09:03:19,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.5) internal successors, (273), 25 states have internal predecessors, (273), 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) [2021-10-28 09:03:19,957 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 290 transitions. [2021-10-28 09:03:19,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-10-28 09:03:19,959 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:03:19,959 INFO L513 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:20,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:20,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:20,180 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:03:20,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:20,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1195725790, now seen corresponding path program 23 times [2021-10-28 09:03:20,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:20,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444400061] [2021-10-28 09:03:20,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:20,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:20,202 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:03:20,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2062010701] [2021-10-28 09:03:20,202 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:03:20,202 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:20,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:20,204 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:20,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-28 09:03:33,953 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-10-28 09:03:33,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:33,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 957 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-28 09:03:33,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:35,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3082 backedges. 0 proven. 3082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:35,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:35,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444400061] [2021-10-28 09:03:35,042 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:03:35,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062010701] [2021-10-28 09:03:35,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062010701] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:35,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:03:35,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2021-10-28 09:03:35,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243850727] [2021-10-28 09:03:35,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-28 09:03:35,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:35,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-28 09:03:35,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2021-10-28 09:03:35,044 INFO L87 Difference]: Start difference. First operand 290 states and 290 transitions. Second operand has 27 states, 27 states have (on average 10.555555555555555) internal successors, (285), 26 states have internal predecessors, (285), 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) [2021-10-28 09:03:35,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:35,517 INFO L93 Difference]: Finished difference Result 312 states and 312 transitions. [2021-10-28 09:03:35,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-28 09:03:35,518 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 10.555555555555555) internal successors, (285), 26 states have internal predecessors, (285), 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 285 [2021-10-28 09:03:35,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:03:35,520 INFO L225 Difference]: With dead ends: 312 [2021-10-28 09:03:35,520 INFO L226 Difference]: Without dead ends: 302 [2021-10-28 09:03:35,521 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=925, Invalid=1525, Unknown=0, NotChecked=0, Total=2450 [2021-10-28 09:03:35,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-10-28 09:03:35,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2021-10-28 09:03:35,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 300 states have (on average 1.0066666666666666) internal successors, (302), 301 states have internal predecessors, (302), 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) [2021-10-28 09:03:35,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 302 transitions. [2021-10-28 09:03:35,579 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 302 transitions. Word has length 285 [2021-10-28 09:03:35,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:03:35,580 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 302 transitions. [2021-10-28 09:03:35,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.555555555555555) internal successors, (285), 26 states have internal predecessors, (285), 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) [2021-10-28 09:03:35,580 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 302 transitions. [2021-10-28 09:03:35,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-10-28 09:03:35,581 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:03:35,581 INFO L513 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:35,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:35,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-28 09:03:35,782 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:03:35,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:35,782 INFO L85 PathProgramCache]: Analyzing trace with hash 132987946, now seen corresponding path program 24 times [2021-10-28 09:03:35,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:35,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656600255] [2021-10-28 09:03:35,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:35,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:35,807 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:03:35,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [75485072] [2021-10-28 09:03:35,808 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:03:35,808 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:35,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:35,809 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:35,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-10-28 09:03:45,360 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-10-28 09:03:45,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:45,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 996 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-28 09:03:45,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:46,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3360 backedges. 0 proven. 3360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:46,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:46,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656600255] [2021-10-28 09:03:46,623 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:03:46,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75485072] [2021-10-28 09:03:46,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75485072] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:46,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:03:46,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2021-10-28 09:03:46,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794206928] [2021-10-28 09:03:46,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-28 09:03:46,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:46,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-28 09:03:46,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2021-10-28 09:03:46,625 INFO L87 Difference]: Start difference. First operand 302 states and 302 transitions. Second operand has 28 states, 28 states have (on average 10.607142857142858) internal successors, (297), 27 states have internal predecessors, (297), 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) [2021-10-28 09:03:47,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:47,089 INFO L93 Difference]: Finished difference Result 324 states and 324 transitions. [2021-10-28 09:03:47,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-28 09:03:47,089 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.607142857142858) internal successors, (297), 27 states have internal predecessors, (297), 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 297 [2021-10-28 09:03:47,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:03:47,091 INFO L225 Difference]: With dead ends: 324 [2021-10-28 09:03:47,091 INFO L226 Difference]: Without dead ends: 314 [2021-10-28 09:03:47,092 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1001, Invalid=1651, Unknown=0, NotChecked=0, Total=2652 [2021-10-28 09:03:47,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-10-28 09:03:47,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2021-10-28 09:03:47,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 312 states have (on average 1.0064102564102564) internal successors, (314), 313 states have internal predecessors, (314), 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) [2021-10-28 09:03:47,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 314 transitions. [2021-10-28 09:03:47,139 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 314 transitions. Word has length 297 [2021-10-28 09:03:47,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:03:47,139 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 314 transitions. [2021-10-28 09:03:47,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.607142857142858) internal successors, (297), 27 states have internal predecessors, (297), 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) [2021-10-28 09:03:47,140 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 314 transitions. [2021-10-28 09:03:47,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-10-28 09:03:47,142 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:03:47,142 INFO L513 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:47,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:47,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:47,361 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:03:47,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:47,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1138753586, now seen corresponding path program 25 times [2021-10-28 09:03:47,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:47,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170225833] [2021-10-28 09:03:47,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:47,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:47,381 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:03:47,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [320976276] [2021-10-28 09:03:47,381 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:03:47,381 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:47,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:47,383 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:47,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-28 09:03:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:49,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-28 09:03:49,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:50,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:50,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:50,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170225833] [2021-10-28 09:03:50,363 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:03:50,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320976276] [2021-10-28 09:03:50,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320976276] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:50,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:03:50,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2021-10-28 09:03:50,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156908909] [2021-10-28 09:03:50,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-28 09:03:50,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:50,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-28 09:03:50,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2021-10-28 09:03:50,365 INFO L87 Difference]: Start difference. First operand 314 states and 314 transitions. Second operand has 29 states, 29 states have (on average 10.655172413793103) internal successors, (309), 28 states have internal predecessors, (309), 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) [2021-10-28 09:03:50,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:50,840 INFO L93 Difference]: Finished difference Result 336 states and 336 transitions. [2021-10-28 09:03:50,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-28 09:03:50,840 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 10.655172413793103) internal successors, (309), 28 states have internal predecessors, (309), 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 309 [2021-10-28 09:03:50,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:03:50,842 INFO L225 Difference]: With dead ends: 336 [2021-10-28 09:03:50,842 INFO L226 Difference]: Without dead ends: 326 [2021-10-28 09:03:50,843 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1080, Invalid=1782, Unknown=0, NotChecked=0, Total=2862 [2021-10-28 09:03:50,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-10-28 09:03:50,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-10-28 09:03:50,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 324 states have (on average 1.0061728395061729) internal successors, (326), 325 states have internal predecessors, (326), 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) [2021-10-28 09:03:50,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 326 transitions. [2021-10-28 09:03:50,906 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 326 transitions. Word has length 309 [2021-10-28 09:03:50,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:03:50,907 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 326 transitions. [2021-10-28 09:03:50,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 10.655172413793103) internal successors, (309), 28 states have internal predecessors, (309), 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) [2021-10-28 09:03:50,907 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 326 transitions. [2021-10-28 09:03:50,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2021-10-28 09:03:50,909 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:03:50,909 INFO L513 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:50,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2021-10-28 09:03:51,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:51,135 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:03:51,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:51,135 INFO L85 PathProgramCache]: Analyzing trace with hash -370870214, now seen corresponding path program 26 times [2021-10-28 09:03:51,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:51,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758786632] [2021-10-28 09:03:51,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:51,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:51,168 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:03:51,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [710684963] [2021-10-28 09:03:51,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:03:51,169 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:51,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:51,170 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:51,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-28 09:03:53,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:03:53,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:53,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 1074 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-28 09:03:53,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:54,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3952 backedges. 0 proven. 3952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:54,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:54,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758786632] [2021-10-28 09:03:54,349 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:03:54,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710684963] [2021-10-28 09:03:54,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710684963] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:54,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:03:54,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2021-10-28 09:03:54,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479210234] [2021-10-28 09:03:54,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-28 09:03:54,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:54,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-28 09:03:54,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2021-10-28 09:03:54,351 INFO L87 Difference]: Start difference. First operand 326 states and 326 transitions. Second operand has 30 states, 30 states have (on average 10.7) internal successors, (321), 29 states have internal predecessors, (321), 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) [2021-10-28 09:03:54,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:54,948 INFO L93 Difference]: Finished difference Result 348 states and 348 transitions. [2021-10-28 09:03:54,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-28 09:03:54,949 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 10.7) internal successors, (321), 29 states have internal predecessors, (321), 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 321 [2021-10-28 09:03:54,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:03:54,951 INFO L225 Difference]: With dead ends: 348 [2021-10-28 09:03:54,951 INFO L226 Difference]: Without dead ends: 338 [2021-10-28 09:03:54,952 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1162, Invalid=1918, Unknown=0, NotChecked=0, Total=3080 [2021-10-28 09:03:54,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-10-28 09:03:55,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2021-10-28 09:03:55,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 336 states have (on average 1.005952380952381) internal successors, (338), 337 states have internal predecessors, (338), 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) [2021-10-28 09:03:55,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 338 transitions. [2021-10-28 09:03:55,013 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 338 transitions. Word has length 321 [2021-10-28 09:03:55,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:03:55,014 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 338 transitions. [2021-10-28 09:03:55,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 10.7) internal successors, (321), 29 states have internal predecessors, (321), 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) [2021-10-28 09:03:55,015 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 338 transitions. [2021-10-28 09:03:55,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2021-10-28 09:03:55,017 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:03:55,018 INFO L513 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:55,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:55,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:55,231 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:03:55,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:55,231 INFO L85 PathProgramCache]: Analyzing trace with hash 206447682, now seen corresponding path program 27 times [2021-10-28 09:03:55,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:55,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738152446] [2021-10-28 09:03:55,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:55,232 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:55,253 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:03:55,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2117234983] [2021-10-28 09:03:55,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:03:55,254 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:55,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:55,255 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:55,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-28 09:03:57,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-10-28 09:03:57,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:57,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 1113 conjuncts, 57 conjunts are in the unsatisfiable core [2021-10-28 09:03:57,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:59,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4266 backedges. 0 proven. 4266 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:59,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:59,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738152446] [2021-10-28 09:03:59,073 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:03:59,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117234983] [2021-10-28 09:03:59,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117234983] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:59,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:03:59,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2021-10-28 09:03:59,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234475480] [2021-10-28 09:03:59,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-28 09:03:59,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:59,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-28 09:03:59,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-10-28 09:03:59,075 INFO L87 Difference]: Start difference. First operand 338 states and 338 transitions. Second operand has 31 states, 31 states have (on average 10.741935483870968) internal successors, (333), 30 states have internal predecessors, (333), 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) [2021-10-28 09:03:59,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:59,606 INFO L93 Difference]: Finished difference Result 360 states and 360 transitions. [2021-10-28 09:03:59,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-28 09:03:59,606 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 10.741935483870968) internal successors, (333), 30 states have internal predecessors, (333), 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 333 [2021-10-28 09:03:59,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:03:59,609 INFO L225 Difference]: With dead ends: 360 [2021-10-28 09:03:59,609 INFO L226 Difference]: Without dead ends: 350 [2021-10-28 09:03:59,610 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1247, Invalid=2059, Unknown=0, NotChecked=0, Total=3306 [2021-10-28 09:03:59,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-10-28 09:03:59,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2021-10-28 09:03:59,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 348 states have (on average 1.0057471264367817) internal successors, (350), 349 states have internal predecessors, (350), 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) [2021-10-28 09:03:59,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 350 transitions. [2021-10-28 09:03:59,680 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 350 transitions. Word has length 333 [2021-10-28 09:03:59,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:03:59,681 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 350 transitions. [2021-10-28 09:03:59,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 10.741935483870968) internal successors, (333), 30 states have internal predecessors, (333), 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) [2021-10-28 09:03:59,681 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 350 transitions. [2021-10-28 09:03:59,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2021-10-28 09:03:59,683 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:03:59,684 INFO L513 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:59,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:59,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-10-28 09:03:59,899 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:03:59,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:59,899 INFO L85 PathProgramCache]: Analyzing trace with hash -764574646, now seen corresponding path program 28 times [2021-10-28 09:03:59,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:59,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610041070] [2021-10-28 09:03:59,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:59,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:59,933 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:03:59,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [899159347] [2021-10-28 09:03:59,933 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:03:59,933 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:59,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:59,938 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:59,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-28 09:04:02,335 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:04:02,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:04:02,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 1152 conjuncts, 59 conjunts are in the unsatisfiable core [2021-10-28 09:04:02,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:04:03,941 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 0 proven. 4592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:03,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:04:03,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610041070] [2021-10-28 09:04:03,942 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:04:03,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899159347] [2021-10-28 09:04:03,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899159347] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:04:03,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:04:03,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2021-10-28 09:04:03,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112740571] [2021-10-28 09:04:03,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-28 09:04:03,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:04:03,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-28 09:04:03,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2021-10-28 09:04:03,943 INFO L87 Difference]: Start difference. First operand 350 states and 350 transitions. Second operand has 32 states, 32 states have (on average 10.78125) internal successors, (345), 31 states have internal predecessors, (345), 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) [2021-10-28 09:04:04,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:04:04,476 INFO L93 Difference]: Finished difference Result 372 states and 372 transitions. [2021-10-28 09:04:04,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-28 09:04:04,477 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 10.78125) internal successors, (345), 31 states have internal predecessors, (345), 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 345 [2021-10-28 09:04:04,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:04:04,479 INFO L225 Difference]: With dead ends: 372 [2021-10-28 09:04:04,479 INFO L226 Difference]: Without dead ends: 362 [2021-10-28 09:04:04,480 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1335, Invalid=2205, Unknown=0, NotChecked=0, Total=3540 [2021-10-28 09:04:04,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-10-28 09:04:04,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2021-10-28 09:04:04,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 360 states have (on average 1.0055555555555555) internal successors, (362), 361 states have internal predecessors, (362), 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) [2021-10-28 09:04:04,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 362 transitions. [2021-10-28 09:04:04,563 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 362 transitions. Word has length 345 [2021-10-28 09:04:04,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:04:04,563 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 362 transitions. [2021-10-28 09:04:04,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 10.78125) internal successors, (345), 31 states have internal predecessors, (345), 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) [2021-10-28 09:04:04,564 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 362 transitions. [2021-10-28 09:04:04,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2021-10-28 09:04:04,566 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:04:04,566 INFO L513 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:04:04,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-10-28 09:04:04,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-10-28 09:04:04,795 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:04:04,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:04,795 INFO L85 PathProgramCache]: Analyzing trace with hash -124446638, now seen corresponding path program 29 times [2021-10-28 09:04:04,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:04:04,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90053185] [2021-10-28 09:04:04,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:04,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:04:04,815 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:04:04,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1886979079] [2021-10-28 09:04:04,816 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:04:04,816 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:04:04,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:04:04,818 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:04:04,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-10-28 09:04:27,576 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-10-28 09:04:27,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:04:27,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 1191 conjuncts, 61 conjunts are in the unsatisfiable core [2021-10-28 09:04:27,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:04:29,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4930 backedges. 0 proven. 4930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:29,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:04:29,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90053185] [2021-10-28 09:04:29,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:04:29,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886979079] [2021-10-28 09:04:29,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886979079] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:04:29,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:04:29,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2021-10-28 09:04:29,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303175611] [2021-10-28 09:04:29,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-28 09:04:29,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:04:29,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-28 09:04:29,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2021-10-28 09:04:29,228 INFO L87 Difference]: Start difference. First operand 362 states and 362 transitions. Second operand has 33 states, 33 states have (on average 10.818181818181818) internal successors, (357), 32 states have internal predecessors, (357), 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) [2021-10-28 09:04:30,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:04:30,050 INFO L93 Difference]: Finished difference Result 384 states and 384 transitions. [2021-10-28 09:04:30,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-28 09:04:30,050 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 10.818181818181818) internal successors, (357), 32 states have internal predecessors, (357), 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 357 [2021-10-28 09:04:30,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:04:30,052 INFO L225 Difference]: With dead ends: 384 [2021-10-28 09:04:30,052 INFO L226 Difference]: Without dead ends: 374 [2021-10-28 09:04:30,053 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1426, Invalid=2356, Unknown=0, NotChecked=0, Total=3782 [2021-10-28 09:04:30,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-10-28 09:04:30,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2021-10-28 09:04:30,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 372 states have (on average 1.0053763440860215) internal successors, (374), 373 states have internal predecessors, (374), 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) [2021-10-28 09:04:30,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 374 transitions. [2021-10-28 09:04:30,139 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 374 transitions. Word has length 357 [2021-10-28 09:04:30,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:04:30,139 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 374 transitions. [2021-10-28 09:04:30,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 10.818181818181818) internal successors, (357), 32 states have internal predecessors, (357), 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) [2021-10-28 09:04:30,140 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 374 transitions. [2021-10-28 09:04:30,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2021-10-28 09:04:30,142 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:04:30,143 INFO L513 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:04:30,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-10-28 09:04:30,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:04:30,351 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:04:30,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:30,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1343676506, now seen corresponding path program 30 times [2021-10-28 09:04:30,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:04:30,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833937548] [2021-10-28 09:04:30,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:30,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:04:30,375 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:04:30,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [617833948] [2021-10-28 09:04:30,375 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:04:30,375 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:04:30,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:04:30,376 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:04:30,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-10-28 09:04:33,163 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-10-28 09:04:33,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:04:33,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 1230 conjuncts, 63 conjunts are in the unsatisfiable core [2021-10-28 09:04:33,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:04:34,565 INFO L134 CoverageAnalysis]: Checked inductivity of 5280 backedges. 0 proven. 5280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:34,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:04:34,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833937548] [2021-10-28 09:04:34,566 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:04:34,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617833948] [2021-10-28 09:04:34,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617833948] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:04:34,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:04:34,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2021-10-28 09:04:34,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686386606] [2021-10-28 09:04:34,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-28 09:04:34,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:04:34,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-28 09:04:34,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2021-10-28 09:04:34,570 INFO L87 Difference]: Start difference. First operand 374 states and 374 transitions. Second operand has 34 states, 34 states have (on average 10.852941176470589) internal successors, (369), 33 states have internal predecessors, (369), 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) [2021-10-28 09:04:35,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:04:35,313 INFO L93 Difference]: Finished difference Result 396 states and 396 transitions. [2021-10-28 09:04:35,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-10-28 09:04:35,314 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 10.852941176470589) internal successors, (369), 33 states have internal predecessors, (369), 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 369 [2021-10-28 09:04:35,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:04:35,316 INFO L225 Difference]: With dead ends: 396 [2021-10-28 09:04:35,317 INFO L226 Difference]: Without dead ends: 386 [2021-10-28 09:04:35,319 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1520, Invalid=2512, Unknown=0, NotChecked=0, Total=4032 [2021-10-28 09:04:35,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-10-28 09:04:35,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2021-10-28 09:04:35,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 384 states have (on average 1.0052083333333333) internal successors, (386), 385 states have internal predecessors, (386), 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) [2021-10-28 09:04:35,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 386 transitions. [2021-10-28 09:04:35,421 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 386 transitions. Word has length 369 [2021-10-28 09:04:35,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:04:35,422 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 386 transitions. [2021-10-28 09:04:35,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 10.852941176470589) internal successors, (369), 33 states have internal predecessors, (369), 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) [2021-10-28 09:04:35,422 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 386 transitions. [2021-10-28 09:04:35,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2021-10-28 09:04:35,425 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:04:35,425 INFO L513 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:04:35,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-10-28 09:04:35,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:04:35,643 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:04:35,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:35,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1061477474, now seen corresponding path program 31 times [2021-10-28 09:04:35,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:04:35,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961140616] [2021-10-28 09:04:35,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:35,644 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:04:35,672 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:04:35,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [609618142] [2021-10-28 09:04:35,672 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:04:35,672 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:04:35,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:04:35,679 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:04:35,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-10-28 09:04:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:04:38,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 1269 conjuncts, 65 conjunts are in the unsatisfiable core [2021-10-28 09:04:38,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:04:40,016 INFO L134 CoverageAnalysis]: Checked inductivity of 5642 backedges. 0 proven. 5642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:40,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:04:40,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961140616] [2021-10-28 09:04:40,017 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:04:40,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609618142] [2021-10-28 09:04:40,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609618142] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:04:40,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:04:40,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2021-10-28 09:04:40,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540245291] [2021-10-28 09:04:40,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-28 09:04:40,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:04:40,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-28 09:04:40,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2021-10-28 09:04:40,021 INFO L87 Difference]: Start difference. First operand 386 states and 386 transitions. Second operand has 35 states, 35 states have (on average 10.885714285714286) internal successors, (381), 34 states have internal predecessors, (381), 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) [2021-10-28 09:04:40,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:04:40,741 INFO L93 Difference]: Finished difference Result 408 states and 408 transitions. [2021-10-28 09:04:40,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-10-28 09:04:40,742 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 10.885714285714286) internal successors, (381), 34 states have internal predecessors, (381), 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 381 [2021-10-28 09:04:40,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:04:40,743 INFO L225 Difference]: With dead ends: 408 [2021-10-28 09:04:40,744 INFO L226 Difference]: Without dead ends: 398 [2021-10-28 09:04:40,744 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1617, Invalid=2673, Unknown=0, NotChecked=0, Total=4290 [2021-10-28 09:04:40,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-10-28 09:04:40,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2021-10-28 09:04:40,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 396 states have (on average 1.005050505050505) internal successors, (398), 397 states have internal predecessors, (398), 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) [2021-10-28 09:04:40,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 398 transitions. [2021-10-28 09:04:40,806 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 398 transitions. Word has length 381 [2021-10-28 09:04:40,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:04:40,806 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 398 transitions. [2021-10-28 09:04:40,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 10.885714285714286) internal successors, (381), 34 states have internal predecessors, (381), 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) [2021-10-28 09:04:40,807 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 398 transitions. [2021-10-28 09:04:40,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2021-10-28 09:04:40,809 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:04:40,810 INFO L513 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:04:40,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-10-28 09:04:41,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-10-28 09:04:41,035 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:04:41,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:41,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1097927786, now seen corresponding path program 32 times [2021-10-28 09:04:41,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:04:41,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198529713] [2021-10-28 09:04:41,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:41,036 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:04:41,069 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:04:41,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1519693127] [2021-10-28 09:04:41,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:04:41,070 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:04:41,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:04:41,071 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:04:41,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-10-28 09:04:43,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:04:43,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:04:43,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 1308 conjuncts, 67 conjunts are in the unsatisfiable core [2021-10-28 09:04:43,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:04:45,323 INFO L134 CoverageAnalysis]: Checked inductivity of 6016 backedges. 0 proven. 6016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:45,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:04:45,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198529713] [2021-10-28 09:04:45,323 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:04:45,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519693127] [2021-10-28 09:04:45,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519693127] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:04:45,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:04:45,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2021-10-28 09:04:45,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32283320] [2021-10-28 09:04:45,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-10-28 09:04:45,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:04:45,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-10-28 09:04:45,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2021-10-28 09:04:45,326 INFO L87 Difference]: Start difference. First operand 398 states and 398 transitions. Second operand has 36 states, 36 states have (on average 10.916666666666666) internal successors, (393), 35 states have internal predecessors, (393), 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) [2021-10-28 09:04:46,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:04:46,209 INFO L93 Difference]: Finished difference Result 420 states and 420 transitions. [2021-10-28 09:04:46,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-10-28 09:04:46,210 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 10.916666666666666) internal successors, (393), 35 states have internal predecessors, (393), 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 393 [2021-10-28 09:04:46,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:04:46,212 INFO L225 Difference]: With dead ends: 420 [2021-10-28 09:04:46,212 INFO L226 Difference]: Without dead ends: 410 [2021-10-28 09:04:46,213 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1717, Invalid=2839, Unknown=0, NotChecked=0, Total=4556 [2021-10-28 09:04:46,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-10-28 09:04:46,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2021-10-28 09:04:46,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 408 states have (on average 1.0049019607843137) internal successors, (410), 409 states have internal predecessors, (410), 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) [2021-10-28 09:04:46,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 410 transitions. [2021-10-28 09:04:46,305 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 410 transitions. Word has length 393 [2021-10-28 09:04:46,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:04:46,306 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 410 transitions. [2021-10-28 09:04:46,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 10.916666666666666) internal successors, (393), 35 states have internal predecessors, (393), 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) [2021-10-28 09:04:46,306 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 410 transitions. [2021-10-28 09:04:46,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2021-10-28 09:04:46,310 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:04:46,310 INFO L513 BasicCegarLoop]: trace histogram [34, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:04:46,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2021-10-28 09:04:46,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-10-28 09:04:46,519 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:04:46,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:46,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1726836850, now seen corresponding path program 33 times [2021-10-28 09:04:46,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:04:46,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868478002] [2021-10-28 09:04:46,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:46,520 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:04:46,565 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:04:46,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1051613277] [2021-10-28 09:04:46,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:04:46,566 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:04:46,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:04:46,568 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:04:46,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-10-28 09:04:49,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-10-28 09:04:49,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:04:49,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 1347 conjuncts, 69 conjunts are in the unsatisfiable core [2021-10-28 09:04:49,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:04:51,379 INFO L134 CoverageAnalysis]: Checked inductivity of 6402 backedges. 0 proven. 6402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:51,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:04:51,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868478002] [2021-10-28 09:04:51,380 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:04:51,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051613277] [2021-10-28 09:04:51,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051613277] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:04:51,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:04:51,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2021-10-28 09:04:51,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005366055] [2021-10-28 09:04:51,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-28 09:04:51,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:04:51,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-28 09:04:51,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2021-10-28 09:04:51,382 INFO L87 Difference]: Start difference. First operand 410 states and 410 transitions. Second operand has 37 states, 37 states have (on average 10.945945945945946) internal successors, (405), 36 states have internal predecessors, (405), 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) [2021-10-28 09:04:52,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:04:52,262 INFO L93 Difference]: Finished difference Result 432 states and 432 transitions. [2021-10-28 09:04:52,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-10-28 09:04:52,262 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 10.945945945945946) internal successors, (405), 36 states have internal predecessors, (405), 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 405 [2021-10-28 09:04:52,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:04:52,265 INFO L225 Difference]: With dead ends: 432 [2021-10-28 09:04:52,265 INFO L226 Difference]: Without dead ends: 422 [2021-10-28 09:04:52,266 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1820, Invalid=3010, Unknown=0, NotChecked=0, Total=4830 [2021-10-28 09:04:52,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-10-28 09:04:52,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2021-10-28 09:04:52,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 420 states have (on average 1.0047619047619047) internal successors, (422), 421 states have internal predecessors, (422), 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) [2021-10-28 09:04:52,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 422 transitions. [2021-10-28 09:04:52,347 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 422 transitions. Word has length 405 [2021-10-28 09:04:52,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:04:52,347 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 422 transitions. [2021-10-28 09:04:52,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 10.945945945945946) internal successors, (405), 36 states have internal predecessors, (405), 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) [2021-10-28 09:04:52,347 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 422 transitions. [2021-10-28 09:04:52,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2021-10-28 09:04:52,349 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:04:52,349 INFO L513 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:04:52,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2021-10-28 09:04:52,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-10-28 09:04:52,550 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:04:52,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:52,551 INFO L85 PathProgramCache]: Analyzing trace with hash -720631686, now seen corresponding path program 34 times [2021-10-28 09:04:52,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:04:52,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940945728] [2021-10-28 09:04:52,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:52,551 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:04:52,622 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:04:52,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [374812512] [2021-10-28 09:04:52,625 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:04:52,625 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:04:52,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:04:52,626 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:04:52,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-10-28 09:04:55,746 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:04:55,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:04:55,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 71 conjunts are in the unsatisfiable core [2021-10-28 09:04:55,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:04:57,661 INFO L134 CoverageAnalysis]: Checked inductivity of 6800 backedges. 0 proven. 6800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:57,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:04:57,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940945728] [2021-10-28 09:04:57,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:04:57,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374812512] [2021-10-28 09:04:57,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374812512] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:04:57,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:04:57,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2021-10-28 09:04:57,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605823127] [2021-10-28 09:04:57,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-28 09:04:57,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:04:57,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-28 09:04:57,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2021-10-28 09:04:57,664 INFO L87 Difference]: Start difference. First operand 422 states and 422 transitions. Second operand has 38 states, 38 states have (on average 10.973684210526315) internal successors, (417), 37 states have internal predecessors, (417), 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) [2021-10-28 09:04:58,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:04:58,489 INFO L93 Difference]: Finished difference Result 444 states and 444 transitions. [2021-10-28 09:04:58,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-10-28 09:04:58,490 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 10.973684210526315) internal successors, (417), 37 states have internal predecessors, (417), 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 417 [2021-10-28 09:04:58,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:04:58,493 INFO L225 Difference]: With dead ends: 444 [2021-10-28 09:04:58,493 INFO L226 Difference]: Without dead ends: 434 [2021-10-28 09:04:58,498 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1926, Invalid=3186, Unknown=0, NotChecked=0, Total=5112 [2021-10-28 09:04:58,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-10-28 09:04:58,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2021-10-28 09:04:58,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 432 states have (on average 1.0046296296296295) internal successors, (434), 433 states have internal predecessors, (434), 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) [2021-10-28 09:04:58,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 434 transitions. [2021-10-28 09:04:58,591 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 434 transitions. Word has length 417 [2021-10-28 09:04:58,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:04:58,591 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 434 transitions. [2021-10-28 09:04:58,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 10.973684210526315) internal successors, (417), 37 states have internal predecessors, (417), 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) [2021-10-28 09:04:58,592 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 434 transitions. [2021-10-28 09:04:58,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2021-10-28 09:04:58,595 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:04:58,596 INFO L513 BasicCegarLoop]: trace histogram [36, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:04:58,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-10-28 09:04:58,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2021-10-28 09:04:58,809 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:04:58,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:58,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1176425602, now seen corresponding path program 35 times [2021-10-28 09:04:58,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:04:58,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530917070] [2021-10-28 09:04:58,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:58,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:04:58,894 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:04:58,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1222867857] [2021-10-28 09:04:58,895 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:04:58,895 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:04:58,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:04:58,896 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:04:58,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-10-28 09:05:17,031 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-10-28 09:05:17,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:05:17,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 1425 conjuncts, 73 conjunts are in the unsatisfiable core [2021-10-28 09:05:17,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:05:18,791 INFO L134 CoverageAnalysis]: Checked inductivity of 7210 backedges. 0 proven. 7210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:05:18,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:05:18,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530917070] [2021-10-28 09:05:18,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:05:18,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222867857] [2021-10-28 09:05:18,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222867857] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:05:18,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:05:18,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2021-10-28 09:05:18,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086718085] [2021-10-28 09:05:18,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-10-28 09:05:18,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:05:18,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-10-28 09:05:18,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2021-10-28 09:05:18,794 INFO L87 Difference]: Start difference. First operand 434 states and 434 transitions. Second operand has 39 states, 39 states have (on average 11.0) internal successors, (429), 38 states have internal predecessors, (429), 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) [2021-10-28 09:05:19,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:05:19,565 INFO L93 Difference]: Finished difference Result 456 states and 456 transitions. [2021-10-28 09:05:19,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-10-28 09:05:19,566 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 11.0) internal successors, (429), 38 states have internal predecessors, (429), 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 429 [2021-10-28 09:05:19,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:05:19,568 INFO L225 Difference]: With dead ends: 456 [2021-10-28 09:05:19,568 INFO L226 Difference]: Without dead ends: 446 [2021-10-28 09:05:19,569 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2035, Invalid=3367, Unknown=0, NotChecked=0, Total=5402 [2021-10-28 09:05:19,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-10-28 09:05:19,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 446. [2021-10-28 09:05:19,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 444 states have (on average 1.0045045045045045) internal successors, (446), 445 states have internal predecessors, (446), 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) [2021-10-28 09:05:19,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 446 transitions. [2021-10-28 09:05:19,639 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 446 transitions. Word has length 429 [2021-10-28 09:05:19,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:05:19,640 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 446 transitions. [2021-10-28 09:05:19,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 11.0) internal successors, (429), 38 states have internal predecessors, (429), 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) [2021-10-28 09:05:19,640 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 446 transitions. [2021-10-28 09:05:19,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2021-10-28 09:05:19,642 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:05:19,642 INFO L513 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:05:19,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-10-28 09:05:19,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:05:19,843 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:05:19,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:05:19,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1988635510, now seen corresponding path program 36 times [2021-10-28 09:05:19,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:05:19,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374151268] [2021-10-28 09:05:19,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:05:19,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:05:19,900 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:05:19,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [179075917] [2021-10-28 09:05:19,901 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:05:19,901 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:05:19,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:05:19,905 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:05:19,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-10-28 09:05:27,909 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-10-28 09:05:27,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:05:27,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 75 conjunts are in the unsatisfiable core [2021-10-28 09:05:27,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:05:29,671 INFO L134 CoverageAnalysis]: Checked inductivity of 7632 backedges. 0 proven. 7632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:05:29,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:05:29,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374151268] [2021-10-28 09:05:29,672 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:05:29,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179075917] [2021-10-28 09:05:29,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179075917] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:05:29,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:05:29,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2021-10-28 09:05:29,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260556661] [2021-10-28 09:05:29,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-10-28 09:05:29,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:05:29,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-10-28 09:05:29,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2021-10-28 09:05:29,675 INFO L87 Difference]: Start difference. First operand 446 states and 446 transitions. Second operand has 40 states, 40 states have (on average 11.025) internal successors, (441), 39 states have internal predecessors, (441), 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) [2021-10-28 09:05:30,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:05:30,580 INFO L93 Difference]: Finished difference Result 468 states and 468 transitions. [2021-10-28 09:05:30,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-10-28 09:05:30,581 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 11.025) internal successors, (441), 39 states have internal predecessors, (441), 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 441 [2021-10-28 09:05:30,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:05:30,582 INFO L225 Difference]: With dead ends: 468 [2021-10-28 09:05:30,582 INFO L226 Difference]: Without dead ends: 458 [2021-10-28 09:05:30,583 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2147, Invalid=3553, Unknown=0, NotChecked=0, Total=5700 [2021-10-28 09:05:30,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-10-28 09:05:30,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 458. [2021-10-28 09:05:30,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 456 states have (on average 1.0043859649122806) internal successors, (458), 457 states have internal predecessors, (458), 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) [2021-10-28 09:05:30,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 458 transitions. [2021-10-28 09:05:30,641 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 458 transitions. Word has length 441 [2021-10-28 09:05:30,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:05:30,642 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 458 transitions. [2021-10-28 09:05:30,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 11.025) internal successors, (441), 39 states have internal predecessors, (441), 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) [2021-10-28 09:05:30,643 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 458 transitions. [2021-10-28 09:05:30,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2021-10-28 09:05:30,645 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:05:30,646 INFO L513 BasicCegarLoop]: trace histogram [38, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:05:30,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-10-28 09:05:30,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:05:30,871 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:05:30,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:05:30,871 INFO L85 PathProgramCache]: Analyzing trace with hash 57215122, now seen corresponding path program 37 times [2021-10-28 09:05:30,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:05:30,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799119512] [2021-10-28 09:05:30,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:05:30,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:05:30,911 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:05:30,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1959916708] [2021-10-28 09:05:30,911 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:05:30,912 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:05:30,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:05:30,913 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:05:30,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-28 09:05:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:05:34,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 1503 conjuncts, 77 conjunts are in the unsatisfiable core [2021-10-28 09:05:34,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:05:36,135 INFO L134 CoverageAnalysis]: Checked inductivity of 8066 backedges. 0 proven. 8066 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:05:36,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:05:36,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799119512] [2021-10-28 09:05:36,136 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:05:36,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959916708] [2021-10-28 09:05:36,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959916708] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:05:36,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:05:36,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2021-10-28 09:05:36,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186031329] [2021-10-28 09:05:36,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-10-28 09:05:36,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:05:36,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-10-28 09:05:36,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2021-10-28 09:05:36,139 INFO L87 Difference]: Start difference. First operand 458 states and 458 transitions. Second operand has 41 states, 41 states have (on average 11.048780487804878) internal successors, (453), 40 states have internal predecessors, (453), 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) [2021-10-28 09:05:37,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:05:37,030 INFO L93 Difference]: Finished difference Result 480 states and 480 transitions. [2021-10-28 09:05:37,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-10-28 09:05:37,031 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 11.048780487804878) internal successors, (453), 40 states have internal predecessors, (453), 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 453 [2021-10-28 09:05:37,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:05:37,033 INFO L225 Difference]: With dead ends: 480 [2021-10-28 09:05:37,033 INFO L226 Difference]: Without dead ends: 470 [2021-10-28 09:05:37,034 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2262, Invalid=3744, Unknown=0, NotChecked=0, Total=6006 [2021-10-28 09:05:37,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-10-28 09:05:37,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2021-10-28 09:05:37,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 468 states have (on average 1.0042735042735043) internal successors, (470), 469 states have internal predecessors, (470), 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) [2021-10-28 09:05:37,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 470 transitions. [2021-10-28 09:05:37,108 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 470 transitions. Word has length 453 [2021-10-28 09:05:37,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:05:37,108 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 470 transitions. [2021-10-28 09:05:37,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 11.048780487804878) internal successors, (453), 40 states have internal predecessors, (453), 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) [2021-10-28 09:05:37,108 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 470 transitions. [2021-10-28 09:05:37,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2021-10-28 09:05:37,110 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:05:37,111 INFO L513 BasicCegarLoop]: trace histogram [39, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:05:37,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2021-10-28 09:05:37,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-10-28 09:05:37,315 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:05:37,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:05:37,315 INFO L85 PathProgramCache]: Analyzing trace with hash 759459994, now seen corresponding path program 38 times [2021-10-28 09:05:37,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:05:37,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524529781] [2021-10-28 09:05:37,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:05:37,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:05:37,361 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:05:37,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1319189107] [2021-10-28 09:05:37,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:05:37,361 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:05:37,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:05:37,362 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:05:37,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-10-28 09:05:40,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:05:40,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:05:40,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 1542 conjuncts, 79 conjunts are in the unsatisfiable core [2021-10-28 09:05:40,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:05:42,496 INFO L134 CoverageAnalysis]: Checked inductivity of 8512 backedges. 0 proven. 8512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:05:42,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:05:42,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524529781] [2021-10-28 09:05:42,497 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:05:42,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319189107] [2021-10-28 09:05:42,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319189107] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:05:42,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:05:42,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2021-10-28 09:05:42,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013182826] [2021-10-28 09:05:42,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-10-28 09:05:42,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:05:42,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-10-28 09:05:42,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2021-10-28 09:05:42,499 INFO L87 Difference]: Start difference. First operand 470 states and 470 transitions. Second operand has 42 states, 42 states have (on average 11.071428571428571) internal successors, (465), 41 states have internal predecessors, (465), 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) [2021-10-28 09:05:43,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:05:43,391 INFO L93 Difference]: Finished difference Result 492 states and 492 transitions. [2021-10-28 09:05:43,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-10-28 09:05:43,391 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 11.071428571428571) internal successors, (465), 41 states have internal predecessors, (465), 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 465 [2021-10-28 09:05:43,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:05:43,393 INFO L225 Difference]: With dead ends: 492 [2021-10-28 09:05:43,393 INFO L226 Difference]: Without dead ends: 482 [2021-10-28 09:05:43,394 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2380, Invalid=3940, Unknown=0, NotChecked=0, Total=6320 [2021-10-28 09:05:43,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-10-28 09:05:43,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2021-10-28 09:05:43,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 480 states have (on average 1.0041666666666667) internal successors, (482), 481 states have internal predecessors, (482), 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) [2021-10-28 09:05:43,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 482 transitions. [2021-10-28 09:05:43,457 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 482 transitions. Word has length 465 [2021-10-28 09:05:43,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:05:43,458 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 482 transitions. [2021-10-28 09:05:43,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 11.071428571428571) internal successors, (465), 41 states have internal predecessors, (465), 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) [2021-10-28 09:05:43,458 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 482 transitions. [2021-10-28 09:05:43,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2021-10-28 09:05:43,460 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:05:43,461 INFO L513 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:05:43,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2021-10-28 09:05:43,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:05:43,661 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:05:43,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:05:43,662 INFO L85 PathProgramCache]: Analyzing trace with hash 358354082, now seen corresponding path program 39 times [2021-10-28 09:05:43,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:05:43,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072846121] [2021-10-28 09:05:43,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:05:43,662 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:05:43,699 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:05:43,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [181906896] [2021-10-28 09:05:43,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:05:43,700 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:05:43,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:05:43,700 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:05:43,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-10-28 09:05:47,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-10-28 09:05:47,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:05:47,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 1581 conjuncts, 81 conjunts are in the unsatisfiable core [2021-10-28 09:05:47,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:05:49,723 INFO L134 CoverageAnalysis]: Checked inductivity of 8970 backedges. 0 proven. 8970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:05:49,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:05:49,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072846121] [2021-10-28 09:05:49,723 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:05:49,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181906896] [2021-10-28 09:05:49,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181906896] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:05:49,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:05:49,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2021-10-28 09:05:49,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866592657] [2021-10-28 09:05:49,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-10-28 09:05:49,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:05:49,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-10-28 09:05:49,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2021-10-28 09:05:49,725 INFO L87 Difference]: Start difference. First operand 482 states and 482 transitions. Second operand has 43 states, 43 states have (on average 11.093023255813954) internal successors, (477), 42 states have internal predecessors, (477), 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) [2021-10-28 09:05:50,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:05:50,660 INFO L93 Difference]: Finished difference Result 504 states and 504 transitions. [2021-10-28 09:05:50,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-10-28 09:05:50,661 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 11.093023255813954) internal successors, (477), 42 states have internal predecessors, (477), 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 477 [2021-10-28 09:05:50,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:05:50,662 INFO L225 Difference]: With dead ends: 504 [2021-10-28 09:05:50,663 INFO L226 Difference]: Without dead ends: 494 [2021-10-28 09:05:50,663 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2501, Invalid=4141, Unknown=0, NotChecked=0, Total=6642 [2021-10-28 09:05:50,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2021-10-28 09:05:50,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 494. [2021-10-28 09:05:50,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 492 states have (on average 1.0040650406504066) internal successors, (494), 493 states have internal predecessors, (494), 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) [2021-10-28 09:05:50,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 494 transitions. [2021-10-28 09:05:50,724 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 494 transitions. Word has length 477 [2021-10-28 09:05:50,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:05:50,725 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 494 transitions. [2021-10-28 09:05:50,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 11.093023255813954) internal successors, (477), 42 states have internal predecessors, (477), 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) [2021-10-28 09:05:50,725 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 494 transitions. [2021-10-28 09:05:50,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2021-10-28 09:05:50,728 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:05:50,729 INFO L513 BasicCegarLoop]: trace histogram [41, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:05:50,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-10-28 09:05:50,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-10-28 09:05:50,943 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:05:50,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:05:50,943 INFO L85 PathProgramCache]: Analyzing trace with hash -553526102, now seen corresponding path program 40 times [2021-10-28 09:05:50,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:05:50,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841194601] [2021-10-28 09:05:50,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:05:50,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:05:51,015 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:05:51,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [509271021] [2021-10-28 09:05:51,015 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:05:51,016 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:05:51,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:05:51,017 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:05:51,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-10-28 09:05:55,596 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:05:55,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:05:55,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 1620 conjuncts, 83 conjunts are in the unsatisfiable core [2021-10-28 09:05:55,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:05:57,646 INFO L134 CoverageAnalysis]: Checked inductivity of 9440 backedges. 0 proven. 9440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:05:57,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:05:57,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841194601] [2021-10-28 09:05:57,646 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:05:57,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509271021] [2021-10-28 09:05:57,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509271021] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:05:57,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:05:57,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2021-10-28 09:05:57,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369596609] [2021-10-28 09:05:57,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-10-28 09:05:57,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:05:57,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-10-28 09:05:57,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2021-10-28 09:05:57,648 INFO L87 Difference]: Start difference. First operand 494 states and 494 transitions. Second operand has 44 states, 44 states have (on average 11.113636363636363) internal successors, (489), 43 states have internal predecessors, (489), 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) [2021-10-28 09:05:58,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:05:58,625 INFO L93 Difference]: Finished difference Result 516 states and 516 transitions. [2021-10-28 09:05:58,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-10-28 09:05:58,625 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 11.113636363636363) internal successors, (489), 43 states have internal predecessors, (489), 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 489 [2021-10-28 09:05:58,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:05:58,627 INFO L225 Difference]: With dead ends: 516 [2021-10-28 09:05:58,627 INFO L226 Difference]: Without dead ends: 506 [2021-10-28 09:05:58,628 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2625, Invalid=4347, Unknown=0, NotChecked=0, Total=6972 [2021-10-28 09:05:58,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-10-28 09:05:58,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2021-10-28 09:05:58,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 504 states have (on average 1.003968253968254) internal successors, (506), 505 states have internal predecessors, (506), 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) [2021-10-28 09:05:58,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 506 transitions. [2021-10-28 09:05:58,700 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 506 transitions. Word has length 489 [2021-10-28 09:05:58,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:05:58,700 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 506 transitions. [2021-10-28 09:05:58,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 11.113636363636363) internal successors, (489), 43 states have internal predecessors, (489), 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) [2021-10-28 09:05:58,700 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 506 transitions. [2021-10-28 09:05:58,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2021-10-28 09:05:58,703 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:05:58,703 INFO L513 BasicCegarLoop]: trace histogram [42, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:05:58,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2021-10-28 09:05:58,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-10-28 09:05:58,904 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:05:58,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:05:58,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1116201138, now seen corresponding path program 41 times [2021-10-28 09:05:58,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:05:58,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168619083] [2021-10-28 09:05:58,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:05:58,905 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:05:58,938 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:05:58,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [413696727] [2021-10-28 09:05:58,939 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:05:58,939 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:05:58,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:05:58,942 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:05:58,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-10-28 09:06:14,198 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-10-28 09:06:14,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:06:14,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 1659 conjuncts, 85 conjunts are in the unsatisfiable core [2021-10-28 09:06:14,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:06:16,407 INFO L134 CoverageAnalysis]: Checked inductivity of 9922 backedges. 0 proven. 9922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:16,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:16,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168619083] [2021-10-28 09:06:16,407 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:06:16,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413696727] [2021-10-28 09:06:16,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413696727] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:06:16,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:06:16,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2021-10-28 09:06:16,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703381808] [2021-10-28 09:06:16,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-10-28 09:06:16,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:16,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-10-28 09:06:16,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2021-10-28 09:06:16,409 INFO L87 Difference]: Start difference. First operand 506 states and 506 transitions. Second operand has 45 states, 45 states have (on average 11.133333333333333) internal successors, (501), 44 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) [2021-10-28 09:06:17,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:17,412 INFO L93 Difference]: Finished difference Result 528 states and 528 transitions. [2021-10-28 09:06:17,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-10-28 09:06:17,413 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 11.133333333333333) internal successors, (501), 44 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) Word has length 501 [2021-10-28 09:06:17,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:17,415 INFO L225 Difference]: With dead ends: 528 [2021-10-28 09:06:17,415 INFO L226 Difference]: Without dead ends: 518 [2021-10-28 09:06:17,415 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 457 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2752, Invalid=4558, Unknown=0, NotChecked=0, Total=7310 [2021-10-28 09:06:17,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-10-28 09:06:17,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 518. [2021-10-28 09:06:17,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 516 states have (on average 1.003875968992248) internal successors, (518), 517 states have internal predecessors, (518), 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) [2021-10-28 09:06:17,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 518 transitions. [2021-10-28 09:06:17,480 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 518 transitions. Word has length 501 [2021-10-28 09:06:17,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:17,480 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 518 transitions. [2021-10-28 09:06:17,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 11.133333333333333) internal successors, (501), 44 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) [2021-10-28 09:06:17,481 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 518 transitions. [2021-10-28 09:06:17,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2021-10-28 09:06:17,483 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:17,483 INFO L513 BasicCegarLoop]: trace histogram [43, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:17,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2021-10-28 09:06:17,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-10-28 09:06:17,684 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:06:17,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:17,684 INFO L85 PathProgramCache]: Analyzing trace with hash 222304442, now seen corresponding path program 42 times [2021-10-28 09:06:17,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:17,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835346425] [2021-10-28 09:06:17,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:17,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:17,725 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:06:17,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1568917485] [2021-10-28 09:06:17,726 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:06:17,726 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:06:17,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:06:17,727 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:06:17,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-10-28 09:06:25,947 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-10-28 09:06:25,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:06:25,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 1698 conjuncts, 87 conjunts are in the unsatisfiable core [2021-10-28 09:06:25,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:06:27,990 INFO L134 CoverageAnalysis]: Checked inductivity of 10416 backedges. 0 proven. 10416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:27,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:27,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835346425] [2021-10-28 09:06:27,991 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:06:27,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568917485] [2021-10-28 09:06:27,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568917485] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:06:27,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:06:27,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2021-10-28 09:06:27,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961764253] [2021-10-28 09:06:27,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-10-28 09:06:27,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:27,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-10-28 09:06:27,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2021-10-28 09:06:27,992 INFO L87 Difference]: Start difference. First operand 518 states and 518 transitions. Second operand has 46 states, 46 states have (on average 11.152173913043478) internal successors, (513), 45 states have internal predecessors, (513), 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) [2021-10-28 09:06:29,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:29,021 INFO L93 Difference]: Finished difference Result 540 states and 540 transitions. [2021-10-28 09:06:29,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-10-28 09:06:29,022 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 11.152173913043478) internal successors, (513), 45 states have internal predecessors, (513), 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 513 [2021-10-28 09:06:29,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:29,025 INFO L225 Difference]: With dead ends: 540 [2021-10-28 09:06:29,025 INFO L226 Difference]: Without dead ends: 530 [2021-10-28 09:06:29,026 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2882, Invalid=4774, Unknown=0, NotChecked=0, Total=7656 [2021-10-28 09:06:29,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-10-28 09:06:29,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2021-10-28 09:06:29,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 528 states have (on average 1.003787878787879) internal successors, (530), 529 states have internal predecessors, (530), 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) [2021-10-28 09:06:29,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 530 transitions. [2021-10-28 09:06:29,092 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 530 transitions. Word has length 513 [2021-10-28 09:06:29,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:29,093 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 530 transitions. [2021-10-28 09:06:29,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 11.152173913043478) internal successors, (513), 45 states have internal predecessors, (513), 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) [2021-10-28 09:06:29,093 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 530 transitions. [2021-10-28 09:06:29,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2021-10-28 09:06:29,097 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:29,097 INFO L513 BasicCegarLoop]: trace histogram [44, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:29,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2021-10-28 09:06:29,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-10-28 09:06:29,319 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:06:29,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:29,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1585675070, now seen corresponding path program 43 times [2021-10-28 09:06:29,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:29,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446736836] [2021-10-28 09:06:29,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:29,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:29,364 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:06:29,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [861299957] [2021-10-28 09:06:29,365 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:06:29,365 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:06:29,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:06:29,366 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:06:29,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-10-28 09:06:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:33,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 89 conjunts are in the unsatisfiable core [2021-10-28 09:06:33,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:06:35,549 INFO L134 CoverageAnalysis]: Checked inductivity of 10922 backedges. 0 proven. 10922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:35,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:35,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446736836] [2021-10-28 09:06:35,549 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:06:35,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861299957] [2021-10-28 09:06:35,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861299957] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:06:35,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:06:35,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2021-10-28 09:06:35,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241088926] [2021-10-28 09:06:35,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-10-28 09:06:35,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:35,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-10-28 09:06:35,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2021-10-28 09:06:35,552 INFO L87 Difference]: Start difference. First operand 530 states and 530 transitions. Second operand has 47 states, 47 states have (on average 11.170212765957446) internal successors, (525), 46 states have internal predecessors, (525), 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) [2021-10-28 09:06:36,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:36,639 INFO L93 Difference]: Finished difference Result 552 states and 552 transitions. [2021-10-28 09:06:36,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-10-28 09:06:36,639 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 11.170212765957446) internal successors, (525), 46 states have internal predecessors, (525), 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 525 [2021-10-28 09:06:36,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:36,642 INFO L225 Difference]: With dead ends: 552 [2021-10-28 09:06:36,642 INFO L226 Difference]: Without dead ends: 542 [2021-10-28 09:06:36,643 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3015, Invalid=4995, Unknown=0, NotChecked=0, Total=8010 [2021-10-28 09:06:36,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-10-28 09:06:36,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2021-10-28 09:06:36,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 540 states have (on average 1.0037037037037038) internal successors, (542), 541 states have internal predecessors, (542), 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) [2021-10-28 09:06:36,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 542 transitions. [2021-10-28 09:06:36,714 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 542 transitions. Word has length 525 [2021-10-28 09:06:36,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:36,715 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 542 transitions. [2021-10-28 09:06:36,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 11.170212765957446) internal successors, (525), 46 states have internal predecessors, (525), 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) [2021-10-28 09:06:36,715 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 542 transitions. [2021-10-28 09:06:36,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2021-10-28 09:06:36,717 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:36,718 INFO L513 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:36,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-10-28 09:06:36,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-10-28 09:06:36,918 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:06:36,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:36,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1989092554, now seen corresponding path program 44 times [2021-10-28 09:06:36,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:36,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552866417] [2021-10-28 09:06:36,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:36,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:36,954 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:06:36,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [963442579] [2021-10-28 09:06:36,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:06:36,955 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:06:36,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:06:36,956 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:06:36,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-10-28 09:06:41,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:06:41,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:06:41,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 91 conjunts are in the unsatisfiable core [2021-10-28 09:06:41,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:06:43,394 INFO L134 CoverageAnalysis]: Checked inductivity of 11440 backedges. 0 proven. 11440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:43,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:43,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552866417] [2021-10-28 09:06:43,395 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:06:43,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963442579] [2021-10-28 09:06:43,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963442579] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:06:43,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:06:43,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2021-10-28 09:06:43,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347836738] [2021-10-28 09:06:43,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-10-28 09:06:43,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:43,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-10-28 09:06:43,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2021-10-28 09:06:43,397 INFO L87 Difference]: Start difference. First operand 542 states and 542 transitions. Second operand has 48 states, 48 states have (on average 11.1875) internal successors, (537), 47 states have internal predecessors, (537), 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) [2021-10-28 09:06:44,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:44,555 INFO L93 Difference]: Finished difference Result 564 states and 564 transitions. [2021-10-28 09:06:44,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-10-28 09:06:44,555 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 11.1875) internal successors, (537), 47 states have internal predecessors, (537), 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 537 [2021-10-28 09:06:44,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:44,558 INFO L225 Difference]: With dead ends: 564 [2021-10-28 09:06:44,558 INFO L226 Difference]: Without dead ends: 554 [2021-10-28 09:06:44,559 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3151, Invalid=5221, Unknown=0, NotChecked=0, Total=8372 [2021-10-28 09:06:44,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-10-28 09:06:44,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 554. [2021-10-28 09:06:44,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 552 states have (on average 1.0036231884057971) internal successors, (554), 553 states have internal predecessors, (554), 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) [2021-10-28 09:06:44,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 554 transitions. [2021-10-28 09:06:44,629 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 554 transitions. Word has length 537 [2021-10-28 09:06:44,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:44,630 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 554 transitions. [2021-10-28 09:06:44,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 11.1875) internal successors, (537), 47 states have internal predecessors, (537), 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) [2021-10-28 09:06:44,630 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 554 transitions. [2021-10-28 09:06:44,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2021-10-28 09:06:44,633 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:44,633 INFO L513 BasicCegarLoop]: trace histogram [46, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:44,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-10-28 09:06:44,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:06:44,833 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:06:44,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:44,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1731594030, now seen corresponding path program 45 times [2021-10-28 09:06:44,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:44,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265115618] [2021-10-28 09:06:44,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:44,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:44,918 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:06:44,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [632369165] [2021-10-28 09:06:44,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:06:44,918 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:06:44,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:06:44,921 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:06:44,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-10-28 09:06:49,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-10-28 09:06:49,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:06:49,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 1815 conjuncts, 93 conjunts are in the unsatisfiable core [2021-10-28 09:06:49,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:06:52,102 INFO L134 CoverageAnalysis]: Checked inductivity of 11970 backedges. 0 proven. 11970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:52,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:52,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265115618] [2021-10-28 09:06:52,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:06:52,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632369165] [2021-10-28 09:06:52,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632369165] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:06:52,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:06:52,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2021-10-28 09:06:52,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510185613] [2021-10-28 09:06:52,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-10-28 09:06:52,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:52,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-10-28 09:06:52,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2021-10-28 09:06:52,105 INFO L87 Difference]: Start difference. First operand 554 states and 554 transitions. Second operand has 49 states, 49 states have (on average 11.204081632653061) internal successors, (549), 48 states have internal predecessors, (549), 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) [2021-10-28 09:06:53,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:53,276 INFO L93 Difference]: Finished difference Result 576 states and 576 transitions. [2021-10-28 09:06:53,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-10-28 09:06:53,277 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 11.204081632653061) internal successors, (549), 48 states have internal predecessors, (549), 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 549 [2021-10-28 09:06:53,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:53,279 INFO L225 Difference]: With dead ends: 576 [2021-10-28 09:06:53,279 INFO L226 Difference]: Without dead ends: 566 [2021-10-28 09:06:53,280 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3290, Invalid=5452, Unknown=0, NotChecked=0, Total=8742 [2021-10-28 09:06:53,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-10-28 09:06:53,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2021-10-28 09:06:53,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 564 states have (on average 1.00354609929078) internal successors, (566), 565 states have internal predecessors, (566), 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) [2021-10-28 09:06:53,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 566 transitions. [2021-10-28 09:06:53,352 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 566 transitions. Word has length 549 [2021-10-28 09:06:53,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:53,352 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 566 transitions. [2021-10-28 09:06:53,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 11.204081632653061) internal successors, (549), 48 states have internal predecessors, (549), 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) [2021-10-28 09:06:53,353 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 566 transitions. [2021-10-28 09:06:53,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2021-10-28 09:06:53,356 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:53,356 INFO L513 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:53,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-10-28 09:06:53,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:06:53,557 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:06:53,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:53,557 INFO L85 PathProgramCache]: Analyzing trace with hash 696189146, now seen corresponding path program 46 times [2021-10-28 09:06:53,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:53,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886134958] [2021-10-28 09:06:53,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:53,557 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:53,593 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:06:53,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [89835828] [2021-10-28 09:06:53,594 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:06:53,594 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:06:53,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:06:53,597 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:06:53,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-10-28 09:06:58,380 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:06:58,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:06:58,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 1854 conjuncts, 95 conjunts are in the unsatisfiable core [2021-10-28 09:06:58,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:07:00,689 INFO L134 CoverageAnalysis]: Checked inductivity of 12512 backedges. 0 proven. 12512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:07:00,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:07:00,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886134958] [2021-10-28 09:07:00,690 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:07:00,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89835828] [2021-10-28 09:07:00,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89835828] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:07:00,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:07:00,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2021-10-28 09:07:00,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959414896] [2021-10-28 09:07:00,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-10-28 09:07:00,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:07:00,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-10-28 09:07:00,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2021-10-28 09:07:00,692 INFO L87 Difference]: Start difference. First operand 566 states and 566 transitions. Second operand has 50 states, 50 states have (on average 11.22) internal successors, (561), 49 states have internal predecessors, (561), 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) [2021-10-28 09:07:01,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:07:01,960 INFO L93 Difference]: Finished difference Result 588 states and 588 transitions. [2021-10-28 09:07:01,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-10-28 09:07:01,960 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 11.22) internal successors, (561), 49 states have internal predecessors, (561), 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 561 [2021-10-28 09:07:01,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:07:01,962 INFO L225 Difference]: With dead ends: 588 [2021-10-28 09:07:01,962 INFO L226 Difference]: Without dead ends: 578 [2021-10-28 09:07:01,963 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3432, Invalid=5688, Unknown=0, NotChecked=0, Total=9120 [2021-10-28 09:07:01,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-10-28 09:07:02,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2021-10-28 09:07:02,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 576 states have (on average 1.0034722222222223) internal successors, (578), 577 states have internal predecessors, (578), 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) [2021-10-28 09:07:02,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 578 transitions. [2021-10-28 09:07:02,034 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 578 transitions. Word has length 561 [2021-10-28 09:07:02,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:07:02,034 INFO L470 AbstractCegarLoop]: Abstraction has 578 states and 578 transitions. [2021-10-28 09:07:02,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 11.22) internal successors, (561), 49 states have internal predecessors, (561), 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) [2021-10-28 09:07:02,034 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 578 transitions. [2021-10-28 09:07:02,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2021-10-28 09:07:02,037 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:07:02,037 INFO L513 BasicCegarLoop]: trace histogram [48, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:07:02,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-10-28 09:07:02,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:07:02,239 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:07:02,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:07:02,239 INFO L85 PathProgramCache]: Analyzing trace with hash -553632542, now seen corresponding path program 47 times [2021-10-28 09:07:02,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:07:02,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144143199] [2021-10-28 09:07:02,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:07:02,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:07:02,281 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:07:02,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1491113297] [2021-10-28 09:07:02,281 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:07:02,281 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:07:02,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:07:02,282 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:07:02,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-10-28 09:07:13,787 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2021-10-28 09:07:13,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:07:13,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 1893 conjuncts, 97 conjunts are in the unsatisfiable core [2021-10-28 09:07:13,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:07:16,068 INFO L134 CoverageAnalysis]: Checked inductivity of 13066 backedges. 0 proven. 13066 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:07:16,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:07:16,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144143199] [2021-10-28 09:07:16,068 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:07:16,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491113297] [2021-10-28 09:07:16,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491113297] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:07:16,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:07:16,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2021-10-28 09:07:16,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10502119] [2021-10-28 09:07:16,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-10-28 09:07:16,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:07:16,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-10-28 09:07:16,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2021-10-28 09:07:16,071 INFO L87 Difference]: Start difference. First operand 578 states and 578 transitions. Second operand has 51 states, 51 states have (on average 11.235294117647058) internal successors, (573), 50 states have internal predecessors, (573), 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) [2021-10-28 09:07:17,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:07:17,311 INFO L93 Difference]: Finished difference Result 600 states and 600 transitions. [2021-10-28 09:07:17,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-10-28 09:07:17,312 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 11.235294117647058) internal successors, (573), 50 states have internal predecessors, (573), 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 573 [2021-10-28 09:07:17,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:07:17,314 INFO L225 Difference]: With dead ends: 600 [2021-10-28 09:07:17,314 INFO L226 Difference]: Without dead ends: 590 [2021-10-28 09:07:17,315 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3577, Invalid=5929, Unknown=0, NotChecked=0, Total=9506 [2021-10-28 09:07:17,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-10-28 09:07:17,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2021-10-28 09:07:17,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 588 states have (on average 1.0034013605442176) internal successors, (590), 589 states have internal predecessors, (590), 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) [2021-10-28 09:07:17,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 590 transitions. [2021-10-28 09:07:17,389 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 590 transitions. Word has length 573 [2021-10-28 09:07:17,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:07:17,389 INFO L470 AbstractCegarLoop]: Abstraction has 590 states and 590 transitions. [2021-10-28 09:07:17,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 11.235294117647058) internal successors, (573), 50 states have internal predecessors, (573), 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) [2021-10-28 09:07:17,390 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 590 transitions. [2021-10-28 09:07:17,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2021-10-28 09:07:17,393 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:07:17,393 INFO L513 BasicCegarLoop]: trace histogram [49, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:07:17,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2021-10-28 09:07:17,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:07:17,594 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:07:17,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:07:17,594 INFO L85 PathProgramCache]: Analyzing trace with hash -2069910294, now seen corresponding path program 48 times [2021-10-28 09:07:17,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:07:17,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834409033] [2021-10-28 09:07:17,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:07:17,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:07:17,634 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:07:17,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [295153913] [2021-10-28 09:07:17,634 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:07:17,635 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:07:17,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:07:17,637 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:07:17,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-10-28 09:07:29,134 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-10-28 09:07:29,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:07:29,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 1932 conjuncts, 99 conjunts are in the unsatisfiable core [2021-10-28 09:07:29,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:07:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 13632 backedges. 0 proven. 13632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:07:31,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:07:31,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834409033] [2021-10-28 09:07:31,639 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:07:31,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295153913] [2021-10-28 09:07:31,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295153913] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:07:31,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:07:31,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2021-10-28 09:07:31,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065343963] [2021-10-28 09:07:31,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-10-28 09:07:31,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:07:31,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-10-28 09:07:31,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2021-10-28 09:07:31,642 INFO L87 Difference]: Start difference. First operand 590 states and 590 transitions. Second operand has 52 states, 52 states have (on average 11.25) internal successors, (585), 51 states have internal predecessors, (585), 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) [2021-10-28 09:07:32,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:07:32,935 INFO L93 Difference]: Finished difference Result 612 states and 612 transitions. [2021-10-28 09:07:32,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-10-28 09:07:32,936 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 11.25) internal successors, (585), 51 states have internal predecessors, (585), 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 585 [2021-10-28 09:07:32,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:07:32,938 INFO L225 Difference]: With dead ends: 612 [2021-10-28 09:07:32,938 INFO L226 Difference]: Without dead ends: 602 [2021-10-28 09:07:32,939 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 534 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3725, Invalid=6175, Unknown=0, NotChecked=0, Total=9900 [2021-10-28 09:07:32,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-10-28 09:07:33,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2021-10-28 09:07:33,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 600 states have (on average 1.0033333333333334) internal successors, (602), 601 states have internal predecessors, (602), 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) [2021-10-28 09:07:33,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 602 transitions. [2021-10-28 09:07:33,014 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 602 transitions. Word has length 585 [2021-10-28 09:07:33,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:07:33,014 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 602 transitions. [2021-10-28 09:07:33,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 11.25) internal successors, (585), 51 states have internal predecessors, (585), 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) [2021-10-28 09:07:33,015 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 602 transitions. [2021-10-28 09:07:33,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2021-10-28 09:07:33,017 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:07:33,018 INFO L513 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:07:33,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2021-10-28 09:07:33,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:07:33,223 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:07:33,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:07:33,223 INFO L85 PathProgramCache]: Analyzing trace with hash 2058309874, now seen corresponding path program 49 times [2021-10-28 09:07:33,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:07:33,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291815088] [2021-10-28 09:07:33,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:07:33,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:07:33,263 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:07:33,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1913594888] [2021-10-28 09:07:33,263 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:07:33,263 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:07:33,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:07:33,264 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:07:33,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-10-28 09:07:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:07:38,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 1971 conjuncts, 101 conjunts are in the unsatisfiable core [2021-10-28 09:07:38,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:07:40,879 INFO L134 CoverageAnalysis]: Checked inductivity of 14210 backedges. 0 proven. 14210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:07:40,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:07:40,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291815088] [2021-10-28 09:07:40,880 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:07:40,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913594888] [2021-10-28 09:07:40,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913594888] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:07:40,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:07:40,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2021-10-28 09:07:40,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769643346] [2021-10-28 09:07:40,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-10-28 09:07:40,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:07:40,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-10-28 09:07:40,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2021-10-28 09:07:40,882 INFO L87 Difference]: Start difference. First operand 602 states and 602 transitions. Second operand has 53 states, 53 states have (on average 11.264150943396226) internal successors, (597), 52 states have internal predecessors, (597), 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) [2021-10-28 09:07:42,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:07:42,285 INFO L93 Difference]: Finished difference Result 624 states and 624 transitions. [2021-10-28 09:07:42,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-10-28 09:07:42,285 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 11.264150943396226) internal successors, (597), 52 states have internal predecessors, (597), 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 597 [2021-10-28 09:07:42,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:07:42,288 INFO L225 Difference]: With dead ends: 624 [2021-10-28 09:07:42,288 INFO L226 Difference]: Without dead ends: 614 [2021-10-28 09:07:42,289 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3876, Invalid=6426, Unknown=0, NotChecked=0, Total=10302 [2021-10-28 09:07:42,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-10-28 09:07:42,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2021-10-28 09:07:42,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 612 states have (on average 1.0032679738562091) internal successors, (614), 613 states have internal predecessors, (614), 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) [2021-10-28 09:07:42,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 614 transitions. [2021-10-28 09:07:42,366 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 614 transitions. Word has length 597 [2021-10-28 09:07:42,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:07:42,367 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 614 transitions. [2021-10-28 09:07:42,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 11.264150943396226) internal successors, (597), 52 states have internal predecessors, (597), 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) [2021-10-28 09:07:42,367 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 614 transitions. [2021-10-28 09:07:42,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2021-10-28 09:07:42,370 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:07:42,371 INFO L513 BasicCegarLoop]: trace histogram [51, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:07:42,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2021-10-28 09:07:42,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-10-28 09:07:42,578 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:07:42,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:07:42,578 INFO L85 PathProgramCache]: Analyzing trace with hash 914434298, now seen corresponding path program 50 times [2021-10-28 09:07:42,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:07:42,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330872467] [2021-10-28 09:07:42,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:07:42,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:07:42,649 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:07:42,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1761700971] [2021-10-28 09:07:42,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:07:42,650 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:07:42,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:07:42,651 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:07:42,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-10-28 09:07:47,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:07:47,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-28 09:07:47,822 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:07:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:07:48,289 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:07:48,289 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:07:48,290 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:07:48,292 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:07:48,293 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:07:48,293 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:07:48,293 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:07:48,293 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:07:48,293 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:07:48,293 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:07:48,293 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:07:48,294 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:07:48,294 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:07:48,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2021-10-28 09:07:48,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-10-28 09:07:48,502 INFO L731 BasicCegarLoop]: Path program histogram: [50, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-28 09:07:48,507 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:07:48,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:07:48 BoogieIcfgContainer [2021-10-28 09:07:48,719 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:07:48,720 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:07:48,720 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:07:48,720 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:07:48,721 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:59:03" (3/4) ... [2021-10-28 09:07:48,723 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 09:07:48,885 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:07:48,885 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:07:48,886 INFO L168 Benchmark]: Toolchain (without parser) took 525925.52 ms. Allocated memory was 90.2 MB in the beginning and 2.0 GB in the end (delta: 1.9 GB). Free memory was 54.2 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 681.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:07:48,887 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 90.2 MB. Free memory is still 70.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:07:48,887 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.03 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 54.0 MB in the beginning and 90.6 MB in the end (delta: -36.6 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:07:48,887 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.04 ms. Allocated memory is still 115.3 MB. Free memory was 90.6 MB in the beginning and 88.9 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:07:48,887 INFO L168 Benchmark]: Boogie Preprocessor took 48.92 ms. Allocated memory is still 115.3 MB. Free memory was 88.6 MB in the beginning and 87.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:07:48,888 INFO L168 Benchmark]: RCFGBuilder took 438.81 ms. Allocated memory is still 115.3 MB. Free memory was 87.5 MB in the beginning and 76.0 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:07:48,888 INFO L168 Benchmark]: TraceAbstraction took 524878.24 ms. Allocated memory was 115.3 MB in the beginning and 2.0 GB in the end (delta: 1.9 GB). Free memory was 75.7 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 647.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:07:48,888 INFO L168 Benchmark]: Witness Printer took 165.31 ms. Allocated memory is still 2.0 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:07:48,890 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 90.2 MB. Free memory is still 70.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 318.03 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 54.0 MB in the beginning and 90.6 MB in the end (delta: -36.6 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.04 ms. Allocated memory is still 115.3 MB. Free memory was 90.6 MB in the beginning and 88.9 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.92 ms. Allocated memory is still 115.3 MB. Free memory was 88.6 MB in the beginning and 87.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 438.81 ms. Allocated memory is still 115.3 MB. Free memory was 87.5 MB in the beginning and 76.0 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 524878.24 ms. Allocated memory was 115.3 MB in the beginning and 2.0 GB in the end (delta: 1.9 GB). Free memory was 75.7 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 647.9 MB. Max. memory is 16.1 GB. * Witness Printer took 165.31 ms. Allocated memory is still 2.0 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] short a; [L25] long long n, x, y, z; [L26] a = __VERIFIER_nondet_ushort() [L28] n = 0 [L29] x = 0 [L30] y = 1 [L31] z = 6 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=1] [L33] EXPR counter++ VAL [counter=2] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=2] [L33] EXPR counter++ VAL [counter=3] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=3] [L33] EXPR counter++ VAL [counter=4] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=4] [L33] EXPR counter++ VAL [counter=5] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=5] [L33] EXPR counter++ VAL [counter=6] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=6] [L33] EXPR counter++ VAL [counter=7] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=7] [L33] EXPR counter++ VAL [counter=8] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=8] [L33] EXPR counter++ VAL [counter=9] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=9] [L33] EXPR counter++ VAL [counter=10] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=10] [L33] EXPR counter++ VAL [counter=11] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=11] [L15] COND FALSE !(!(cond)) VAL [counter=11] [L15] COND FALSE !(!(cond)) VAL [counter=11] [L15] COND FALSE !(!(cond)) VAL [counter=11] [L15] COND FALSE !(!(cond)) VAL [counter=11] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=11] [L33] EXPR counter++ VAL [counter=12] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=12] [L15] COND FALSE !(!(cond)) VAL [counter=12] [L15] COND FALSE !(!(cond)) VAL [counter=12] [L15] COND FALSE !(!(cond)) VAL [counter=12] [L15] COND FALSE !(!(cond)) VAL [counter=12] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=12] [L33] EXPR counter++ VAL [counter=13] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=13] [L15] COND FALSE !(!(cond)) VAL [counter=13] [L15] COND FALSE !(!(cond)) VAL [counter=13] [L15] COND FALSE !(!(cond)) VAL [counter=13] [L15] COND FALSE !(!(cond)) VAL [counter=13] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=13] [L33] EXPR counter++ VAL [counter=14] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=14] [L15] COND FALSE !(!(cond)) VAL [counter=14] [L15] COND FALSE !(!(cond)) VAL [counter=14] [L15] COND FALSE !(!(cond)) VAL [counter=14] [L15] COND FALSE !(!(cond)) VAL [counter=14] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=14] [L33] EXPR counter++ VAL [counter=15] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=15] [L15] COND FALSE !(!(cond)) VAL [counter=15] [L15] COND FALSE !(!(cond)) VAL [counter=15] [L15] COND FALSE !(!(cond)) VAL [counter=15] [L15] COND FALSE !(!(cond)) VAL [counter=15] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=15] [L33] EXPR counter++ VAL [counter=16] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=16] [L15] COND FALSE !(!(cond)) VAL [counter=16] [L15] COND FALSE !(!(cond)) VAL [counter=16] [L15] COND FALSE !(!(cond)) VAL [counter=16] [L15] COND FALSE !(!(cond)) VAL [counter=16] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=16] [L33] EXPR counter++ VAL [counter=17] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=17] [L15] COND FALSE !(!(cond)) VAL [counter=17] [L15] COND FALSE !(!(cond)) VAL [counter=17] [L15] COND FALSE !(!(cond)) VAL [counter=17] [L15] COND FALSE !(!(cond)) VAL [counter=17] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=17] [L33] EXPR counter++ VAL [counter=18] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=18] [L15] COND FALSE !(!(cond)) VAL [counter=18] [L15] COND FALSE !(!(cond)) VAL [counter=18] [L15] COND FALSE !(!(cond)) VAL [counter=18] [L15] COND FALSE !(!(cond)) VAL [counter=18] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=18] [L33] EXPR counter++ VAL [counter=19] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=19] [L15] COND FALSE !(!(cond)) VAL [counter=19] [L15] COND FALSE !(!(cond)) VAL [counter=19] [L15] COND FALSE !(!(cond)) VAL [counter=19] [L15] COND FALSE !(!(cond)) VAL [counter=19] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=19] [L33] EXPR counter++ VAL [counter=20] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=20] [L15] COND FALSE !(!(cond)) VAL [counter=20] [L15] COND FALSE !(!(cond)) VAL [counter=20] [L15] COND FALSE !(!(cond)) VAL [counter=20] [L15] COND FALSE !(!(cond)) VAL [counter=20] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=20] [L33] EXPR counter++ VAL [counter=21] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=21] [L15] COND FALSE !(!(cond)) VAL [counter=21] [L15] COND FALSE !(!(cond)) VAL [counter=21] [L15] COND FALSE !(!(cond)) VAL [counter=21] [L15] COND FALSE !(!(cond)) VAL [counter=21] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=21] [L33] EXPR counter++ VAL [counter=22] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=22] [L15] COND FALSE !(!(cond)) VAL [counter=22] [L15] COND FALSE !(!(cond)) VAL [counter=22] [L15] COND FALSE !(!(cond)) VAL [counter=22] [L15] COND FALSE !(!(cond)) VAL [counter=22] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=22] [L33] EXPR counter++ VAL [counter=23] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=23] [L15] COND FALSE !(!(cond)) VAL [counter=23] [L15] COND FALSE !(!(cond)) VAL [counter=23] [L15] COND FALSE !(!(cond)) VAL [counter=23] [L15] COND FALSE !(!(cond)) VAL [counter=23] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=23] [L33] EXPR counter++ VAL [counter=24] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=24] [L15] COND FALSE !(!(cond)) VAL [counter=24] [L15] COND FALSE !(!(cond)) VAL [counter=24] [L15] COND FALSE !(!(cond)) VAL [counter=24] [L15] COND FALSE !(!(cond)) VAL [counter=24] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=24] [L33] EXPR counter++ VAL [counter=25] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=25] [L15] COND FALSE !(!(cond)) VAL [counter=25] [L15] COND FALSE !(!(cond)) VAL [counter=25] [L15] COND FALSE !(!(cond)) VAL [counter=25] [L15] COND FALSE !(!(cond)) VAL [counter=25] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=25] [L33] EXPR counter++ VAL [counter=26] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=26] [L15] COND FALSE !(!(cond)) VAL [counter=26] [L15] COND FALSE !(!(cond)) VAL [counter=26] [L15] COND FALSE !(!(cond)) VAL [counter=26] [L15] COND FALSE !(!(cond)) VAL [counter=26] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=26] [L33] EXPR counter++ VAL [counter=27] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=27] [L15] COND FALSE !(!(cond)) VAL [counter=27] [L15] COND FALSE !(!(cond)) VAL [counter=27] [L15] COND FALSE !(!(cond)) VAL [counter=27] [L15] COND FALSE !(!(cond)) VAL [counter=27] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=27] [L33] EXPR counter++ VAL [counter=28] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=28] [L15] COND FALSE !(!(cond)) VAL [counter=28] [L15] COND FALSE !(!(cond)) VAL [counter=28] [L15] COND FALSE !(!(cond)) VAL [counter=28] [L15] COND FALSE !(!(cond)) VAL [counter=28] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=28] [L33] EXPR counter++ VAL [counter=29] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=29] [L15] COND FALSE !(!(cond)) VAL [counter=29] [L15] COND FALSE !(!(cond)) VAL [counter=29] [L15] COND FALSE !(!(cond)) VAL [counter=29] [L15] COND FALSE !(!(cond)) VAL [counter=29] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=29] [L33] EXPR counter++ VAL [counter=30] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=30] [L15] COND FALSE !(!(cond)) VAL [counter=30] [L15] COND FALSE !(!(cond)) VAL [counter=30] [L15] COND FALSE !(!(cond)) VAL [counter=30] [L15] COND FALSE !(!(cond)) VAL [counter=30] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=30] [L33] EXPR counter++ VAL [counter=31] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=31] [L15] COND FALSE !(!(cond)) VAL [counter=31] [L15] COND FALSE !(!(cond)) VAL [counter=31] [L15] COND FALSE !(!(cond)) VAL [counter=31] [L15] COND FALSE !(!(cond)) VAL [counter=31] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=31] [L33] EXPR counter++ VAL [counter=32] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=32] [L15] COND FALSE !(!(cond)) VAL [counter=32] [L15] COND FALSE !(!(cond)) VAL [counter=32] [L15] COND FALSE !(!(cond)) VAL [counter=32] [L15] COND FALSE !(!(cond)) VAL [counter=32] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=32] [L33] EXPR counter++ VAL [counter=33] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=33] [L15] COND FALSE !(!(cond)) VAL [counter=33] [L15] COND FALSE !(!(cond)) VAL [counter=33] [L15] COND FALSE !(!(cond)) VAL [counter=33] [L15] COND FALSE !(!(cond)) VAL [counter=33] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=33] [L33] EXPR counter++ VAL [counter=34] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=34] [L15] COND FALSE !(!(cond)) VAL [counter=34] [L15] COND FALSE !(!(cond)) VAL [counter=34] [L15] COND FALSE !(!(cond)) VAL [counter=34] [L15] COND FALSE !(!(cond)) VAL [counter=34] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=34] [L33] EXPR counter++ VAL [counter=35] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=35] [L15] COND FALSE !(!(cond)) VAL [counter=35] [L15] COND FALSE !(!(cond)) VAL [counter=35] [L15] COND FALSE !(!(cond)) VAL [counter=35] [L15] COND FALSE !(!(cond)) VAL [counter=35] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=35] [L33] EXPR counter++ VAL [counter=36] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=36] [L15] COND FALSE !(!(cond)) VAL [counter=36] [L15] COND FALSE !(!(cond)) VAL [counter=36] [L15] COND FALSE !(!(cond)) VAL [counter=36] [L15] COND FALSE !(!(cond)) VAL [counter=36] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=36] [L33] EXPR counter++ VAL [counter=37] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=37] [L15] COND FALSE !(!(cond)) VAL [counter=37] [L15] COND FALSE !(!(cond)) VAL [counter=37] [L15] COND FALSE !(!(cond)) VAL [counter=37] [L15] COND FALSE !(!(cond)) VAL [counter=37] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=37] [L33] EXPR counter++ VAL [counter=38] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=38] [L15] COND FALSE !(!(cond)) VAL [counter=38] [L15] COND FALSE !(!(cond)) VAL [counter=38] [L15] COND FALSE !(!(cond)) VAL [counter=38] [L15] COND FALSE !(!(cond)) VAL [counter=38] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=38] [L33] EXPR counter++ VAL [counter=39] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=39] [L15] COND FALSE !(!(cond)) VAL [counter=39] [L15] COND FALSE !(!(cond)) VAL [counter=39] [L15] COND FALSE !(!(cond)) VAL [counter=39] [L15] COND FALSE !(!(cond)) VAL [counter=39] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=39] [L33] EXPR counter++ VAL [counter=40] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=40] [L15] COND FALSE !(!(cond)) VAL [counter=40] [L15] COND FALSE !(!(cond)) VAL [counter=40] [L15] COND FALSE !(!(cond)) VAL [counter=40] [L15] COND FALSE !(!(cond)) VAL [counter=40] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=40] [L33] EXPR counter++ VAL [counter=41] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=41] [L15] COND FALSE !(!(cond)) VAL [counter=41] [L15] COND FALSE !(!(cond)) VAL [counter=41] [L15] COND FALSE !(!(cond)) VAL [counter=41] [L15] COND FALSE !(!(cond)) VAL [counter=41] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=41] [L33] EXPR counter++ VAL [counter=42] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=42] [L15] COND FALSE !(!(cond)) VAL [counter=42] [L15] COND FALSE !(!(cond)) VAL [counter=42] [L15] COND FALSE !(!(cond)) VAL [counter=42] [L15] COND FALSE !(!(cond)) VAL [counter=42] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=42] [L33] EXPR counter++ VAL [counter=43] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=43] [L15] COND FALSE !(!(cond)) VAL [counter=43] [L15] COND FALSE !(!(cond)) VAL [counter=43] [L15] COND FALSE !(!(cond)) VAL [counter=43] [L15] COND FALSE !(!(cond)) VAL [counter=43] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=43] [L33] EXPR counter++ VAL [counter=44] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=44] [L15] COND FALSE !(!(cond)) VAL [counter=44] [L15] COND FALSE !(!(cond)) VAL [counter=44] [L15] COND FALSE !(!(cond)) VAL [counter=44] [L15] COND FALSE !(!(cond)) VAL [counter=44] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=44] [L33] EXPR counter++ VAL [counter=45] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=45] [L15] COND FALSE !(!(cond)) VAL [counter=45] [L15] COND FALSE !(!(cond)) VAL [counter=45] [L15] COND FALSE !(!(cond)) VAL [counter=45] [L15] COND FALSE !(!(cond)) VAL [counter=45] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=45] [L33] EXPR counter++ VAL [counter=46] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=46] [L15] COND FALSE !(!(cond)) VAL [counter=46] [L15] COND FALSE !(!(cond)) VAL [counter=46] [L15] COND FALSE !(!(cond)) VAL [counter=46] [L15] COND FALSE !(!(cond)) VAL [counter=46] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=46] [L33] EXPR counter++ VAL [counter=47] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=47] [L15] COND FALSE !(!(cond)) VAL [counter=47] [L15] COND FALSE !(!(cond)) VAL [counter=47] [L15] COND FALSE !(!(cond)) VAL [counter=47] [L15] COND FALSE !(!(cond)) VAL [counter=47] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=47] [L33] EXPR counter++ VAL [counter=48] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=48] [L15] COND FALSE !(!(cond)) VAL [counter=48] [L15] COND FALSE !(!(cond)) VAL [counter=48] [L15] COND FALSE !(!(cond)) VAL [counter=48] [L15] COND FALSE !(!(cond)) VAL [counter=48] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=48] [L33] EXPR counter++ VAL [counter=49] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=49] [L15] COND FALSE !(!(cond)) VAL [counter=49] [L15] COND FALSE !(!(cond)) VAL [counter=49] [L15] COND FALSE !(!(cond)) VAL [counter=49] [L15] COND FALSE !(!(cond)) VAL [counter=49] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=49] [L33] EXPR counter++ VAL [counter=50] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=50] [L15] COND FALSE !(!(cond)) VAL [counter=50] [L15] COND FALSE !(!(cond)) VAL [counter=50] [L15] COND FALSE !(!(cond)) VAL [counter=50] [L15] COND FALSE !(!(cond)) VAL [counter=50] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=50] [L33] EXPR counter++ VAL [counter=51] [L33] COND FALSE !(counter++<50) [L15] COND FALSE !(!(cond)) VAL [counter=51] [L15] COND TRUE !(cond) VAL [counter=51] [L17] reach_error() VAL [counter=51] - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 52 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 524.5s, OverallIterations: 67, TraceHistogramMax: 51, PathProgramHistogramMax: 50, EmptinessCheckTime: 0.1s, AutomataDifference: 178.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1615 SDtfs, 903 SDslu, 17083 SDs, 0 SdLazy, 4588 SolverSat, 526 SolverUnsat, 39 SolverUnknown, 0 SolverNotchecked, 133.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16821 GetRequests, 14137 SyntacticMatches, 7 SemanticMatches, 2677 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21013 ImplicationChecksByTransitivity, 87.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=614occurred in iteration=66, InterpolantAutomatonStates: 2765, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.9s AutomataMinimizationTime, 66 MinimizatonAttempts, 237 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.7s SsaConstructionTime, 110.0s SatisfiabilityAnalysisTime, 109.3s InterpolantComputationTime, 16214 NumberOfCodeBlocks, 16118 NumberOfCodeBlocksAsserted, 705 NumberOfCheckSat, 15539 ConstructedInterpolants, 0 QuantifiedInterpolants, 53678 SizeOfPredicates, 1334 NumberOfNonLiveVariables, 52367 ConjunctsInSsa, 2917 ConjunctsInUnsatCore, 66 InterpolantComputations, 7 PerfectInterpolantSequences, 186/237968 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-28 09:07:48,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03086abc-848d-478d-9cca-36cc6c0d4f29/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...