./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound1.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_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/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_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/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_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/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 c7383f54d0aefdd248f516d45c67549426beac87be78bf6e7bb8108aedb7974b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 09:57:25,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:57:25,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:57:25,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:57:25,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:57:25,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:57:25,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:57:25,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:57:25,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:57:25,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:57:25,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:57:25,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:57:25,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:57:25,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:57:25,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:57:25,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:57:25,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:57:25,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:57:25,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:57:25,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:57:25,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:57:25,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:57:25,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:57:25,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:57:25,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:57:25,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:57:25,625 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:57:25,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:57:25,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:57:25,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:57:25,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:57:25,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:57:25,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:57:25,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:57:25,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:57:25,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:57:25,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:57:25,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:57:25,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:57:25,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:57:25,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:57:25,641 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:57:25,698 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:57:25,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:57:25,699 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:57:25,700 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:57:25,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:57:25,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:57:25,710 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:57:25,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:57:25,711 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:57:25,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:57:25,712 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:57:25,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:57:25,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:57:25,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:57:25,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:57:25,714 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:57:25,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:57:25,714 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:57:25,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:57:25,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:57:25,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:57:25,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:57:25,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:57:25,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:57:25,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:57:25,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:57:25,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:57:25,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:57:25,718 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:57:25,720 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:57:25,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:57:25,720 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:57:25,721 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_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7383f54d0aefdd248f516d45c67549426beac87be78bf6e7bb8108aedb7974b [2021-10-28 09:57:26,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:57:26,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:57:26,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:57:26,070 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:57:26,071 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:57:26,072 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound1.c [2021-10-28 09:57:26,176 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/data/509080dcc/4f387a69d8224e90a9820a529c5737b5/FLAGbc2962312 [2021-10-28 09:57:26,744 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:57:26,746 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound1.c [2021-10-28 09:57:26,761 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/data/509080dcc/4f387a69d8224e90a9820a529c5737b5/FLAGbc2962312 [2021-10-28 09:57:27,056 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/data/509080dcc/4f387a69d8224e90a9820a529c5737b5 [2021-10-28 09:57:27,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:57:27,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:57:27,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:57:27,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:57:27,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:57:27,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:57:27" (1/1) ... [2021-10-28 09:57:27,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e47aa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:27, skipping insertion in model container [2021-10-28 09:57:27,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:57:27" (1/1) ... [2021-10-28 09:57:27,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:57:27,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:57:27,296 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_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound1.c[526,539] [2021-10-28 09:57:27,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:57:27,343 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:57:27,358 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_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound1.c[526,539] [2021-10-28 09:57:27,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:57:27,383 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:57:27,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:27 WrapperNode [2021-10-28 09:57:27,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:57:27,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:57:27,385 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:57:27,385 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:57:27,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:27" (1/1) ... [2021-10-28 09:57:27,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:27" (1/1) ... [2021-10-28 09:57:27,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:57:27,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:57:27,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:57:27,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:57:27,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:27" (1/1) ... [2021-10-28 09:57:27,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:27" (1/1) ... [2021-10-28 09:57:27,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:27" (1/1) ... [2021-10-28 09:57:27,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:27" (1/1) ... [2021-10-28 09:57:27,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:27" (1/1) ... [2021-10-28 09:57:27,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:27" (1/1) ... [2021-10-28 09:57:27,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:27" (1/1) ... [2021-10-28 09:57:27,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:57:27,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:57:27,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:57:27,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:57:27,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:27" (1/1) ... [2021-10-28 09:57:27,471 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:57:27,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:57:27,501 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:57:27,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:57:27,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:57:27,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:57:27,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:57:27,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:57:27,925 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:57:27,925 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-10-28 09:57:27,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:57:27 BoogieIcfgContainer [2021-10-28 09:57:27,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:57:27,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:57:27,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:57:27,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:57:27,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:57:27" (1/3) ... [2021-10-28 09:57:27,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@492d4c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:57:27, skipping insertion in model container [2021-10-28 09:57:27,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:27" (2/3) ... [2021-10-28 09:57:27,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@492d4c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:57:27, skipping insertion in model container [2021-10-28 09:57:27,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:57:27" (3/3) ... [2021-10-28 09:57:27,955 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_unwindbound1.c [2021-10-28 09:57:27,962 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:57:27,962 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-28 09:57:28,048 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:57:28,057 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 09:57:28,057 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-28 09:57:28,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 38 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:57:28,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 09:57:28,115 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:28,116 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:57:28,117 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:57:28,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:28,124 INFO L85 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-28 09:57:28,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:28,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647675395] [2021-10-28 09:57:28,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:28,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:28,423 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 09:57:28,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:57:28,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647675395] [2021-10-28 09:57:28,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647675395] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:57:28,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:57:28,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:57:28,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31467141] [2021-10-28 09:57:28,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:57:28,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:57:28,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:57:28,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:57:28,473 INFO L87 Difference]: Start difference. First operand has 39 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 38 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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 09:57:28,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:28,659 INFO L93 Difference]: Finished difference Result 102 states and 139 transitions. [2021-10-28 09:57:28,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:57:28,661 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 09:57:28,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:57:28,673 INFO L225 Difference]: With dead ends: 102 [2021-10-28 09:57:28,674 INFO L226 Difference]: Without dead ends: 57 [2021-10-28 09:57:28,679 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 09:57:28,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-28 09:57:28,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 33. [2021-10-28 09:57:28,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 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 09:57:28,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-10-28 09:57:28,733 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2021-10-28 09:57:28,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:57:28,736 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-10-28 09:57:28,737 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 09:57:28,737 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-10-28 09:57:28,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 09:57:28,740 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:28,740 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:28,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:57:28,742 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:57:28,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:28,746 INFO L85 PathProgramCache]: Analyzing trace with hash 178921133, now seen corresponding path program 1 times [2021-10-28 09:57:28,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:28,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104534472] [2021-10-28 09:57:28,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:28,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:28,793 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:57:28,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765108611] [2021-10-28 09:57:28,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:28,800 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:57:28,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:57:28,807 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:57:28,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:57:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:28,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:57:28,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:57:28,955 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 09:57:28,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:57:28,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104534472] [2021-10-28 09:57:28,957 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:57:28,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765108611] [2021-10-28 09:57:28,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765108611] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:57:28,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:57:28,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:57:28,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913670485] [2021-10-28 09:57:28,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:57:28,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:57:28,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:57:28,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:57:28,962 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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 09:57:28,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:28,994 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2021-10-28 09:57:28,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:57:28,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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 09:57:28,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:57:29,001 INFO L225 Difference]: With dead ends: 54 [2021-10-28 09:57:29,001 INFO L226 Difference]: Without dead ends: 35 [2021-10-28 09:57:29,004 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 09:57:29,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-28 09:57:29,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-10-28 09:57:29,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 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 09:57:29,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-10-28 09:57:29,018 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2021-10-28 09:57:29,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:57:29,018 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-10-28 09:57:29,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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 09:57:29,019 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-10-28 09:57:29,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 09:57:29,020 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:29,020 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:29,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:57:29,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:57:29,236 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:57:29,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:29,237 INFO L85 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-10-28 09:57:29,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:29,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344988869] [2021-10-28 09:57:29,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:29,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:29,341 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 09:57:29,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:57:29,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344988869] [2021-10-28 09:57:29,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344988869] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:57:29,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:57:29,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:57:29,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842010679] [2021-10-28 09:57:29,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:57:29,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:57:29,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:57:29,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:57:29,350 INFO L87 Difference]: Start difference. First operand 35 states and 39 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 09:57:29,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:29,459 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2021-10-28 09:57:29,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:57:29,460 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 09:57:29,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:57:29,461 INFO L225 Difference]: With dead ends: 54 [2021-10-28 09:57:29,462 INFO L226 Difference]: Without dead ends: 52 [2021-10-28 09:57:29,462 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 09:57:29,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-28 09:57:29,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2021-10-28 09:57:29,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 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 09:57:29,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-10-28 09:57:29,471 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 8 [2021-10-28 09:57:29,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:57:29,472 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-10-28 09:57:29,472 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 09:57:29,473 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-10-28 09:57:29,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 09:57:29,473 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:29,474 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:29,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:57:29,474 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:57:29,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:29,475 INFO L85 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-10-28 09:57:29,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:29,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123219739] [2021-10-28 09:57:29,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:29,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:29,490 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:57:29,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [956917731] [2021-10-28 09:57:29,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:29,492 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:57:29,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:57:29,503 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:57:29,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:57:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:29,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:57:29,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:57:29,758 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 09:57:29,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:57:29,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123219739] [2021-10-28 09:57:29,758 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:57:29,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956917731] [2021-10-28 09:57:29,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956917731] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:57:29,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:57:29,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:57:29,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801272940] [2021-10-28 09:57:29,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:57:29,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:57:29,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:57:29,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:57:29,764 INFO L87 Difference]: Start difference. First operand 33 states and 37 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 09:57:29,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:29,912 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2021-10-28 09:57:29,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:57:29,913 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 09:57:29,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:57:29,914 INFO L225 Difference]: With dead ends: 79 [2021-10-28 09:57:29,915 INFO L226 Difference]: Without dead ends: 56 [2021-10-28 09:57:29,915 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 09:57:29,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-28 09:57:29,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2021-10-28 09:57:29,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 46 states have internal predecessors, (54), 0 states have call successors, (0), 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 09:57:29,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2021-10-28 09:57:29,935 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 10 [2021-10-28 09:57:29,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:57:29,936 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2021-10-28 09:57:29,936 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 09:57:29,936 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2021-10-28 09:57:29,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 09:57:29,937 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:29,938 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:29,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-28 09:57:30,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:57:30,156 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:57:30,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:30,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1265846374, now seen corresponding path program 1 times [2021-10-28 09:57:30,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:30,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832106645] [2021-10-28 09:57:30,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:30,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:30,172 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:57:30,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [870703510] [2021-10-28 09:57:30,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:30,173 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:57:30,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:57:30,174 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:57:30,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 09:57:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:30,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:57:30,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:57:30,336 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 09:57:30,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:57:30,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832106645] [2021-10-28 09:57:30,337 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:57:30,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870703510] [2021-10-28 09:57:30,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870703510] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:57:30,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:57:30,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:57:30,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209008628] [2021-10-28 09:57:30,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:57:30,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:57:30,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:57:30,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:57:30,340 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:57:30,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:30,366 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2021-10-28 09:57:30,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:57:30,366 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-28 09:57:30,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:57:30,367 INFO L225 Difference]: With dead ends: 59 [2021-10-28 09:57:30,368 INFO L226 Difference]: Without dead ends: 34 [2021-10-28 09:57:30,368 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:57:30,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-28 09:57:30,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-28 09:57:30,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 33 states have internal predecessors, (36), 0 states have call successors, (0), 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 09:57:30,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2021-10-28 09:57:30,374 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 14 [2021-10-28 09:57:30,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:57:30,375 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2021-10-28 09:57:30,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:57:30,375 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2021-10-28 09:57:30,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 09:57:30,376 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:30,376 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:30,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:57:30,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:57:30,599 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:57:30,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:30,600 INFO L85 PathProgramCache]: Analyzing trace with hash -586558643, now seen corresponding path program 1 times [2021-10-28 09:57:30,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:30,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406359826] [2021-10-28 09:57:30,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:30,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:30,614 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:57:30,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1755219749] [2021-10-28 09:57:30,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:30,616 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:57:30,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:57:30,617 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:57:30,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 09:57:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:30,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:57:30,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:57:30,900 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 09:57:30,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:57:30,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406359826] [2021-10-28 09:57:30,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:57:30,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755219749] [2021-10-28 09:57:30,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755219749] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:57:30,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:57:30,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:57:30,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397743499] [2021-10-28 09:57:30,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:57:30,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:57:30,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:57:30,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:57:30,904 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:57:30,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:30,934 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2021-10-28 09:57:30,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:57:30,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-28 09:57:30,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:57:30,935 INFO L225 Difference]: With dead ends: 34 [2021-10-28 09:57:30,935 INFO L226 Difference]: Without dead ends: 28 [2021-10-28 09:57:30,936 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 09:57:30,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-28 09:57:30,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-28 09:57:30,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 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 09:57:30,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-10-28 09:57:30,941 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 15 [2021-10-28 09:57:30,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:57:30,941 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-10-28 09:57:30,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:57:30,941 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-10-28 09:57:30,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 09:57:30,942 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:30,943 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:30,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:57:31,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:57:31,163 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:57:31,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:31,164 INFO L85 PathProgramCache]: Analyzing trace with hash -2100512702, now seen corresponding path program 1 times [2021-10-28 09:57:31,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:31,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246644536] [2021-10-28 09:57:31,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:31,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:31,179 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:57:31,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [470904234] [2021-10-28 09:57:31,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:31,180 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:57:31,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:57:31,181 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:57:31,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 09:57:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:31,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:57:31,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:57:31,405 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:31,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:57:31,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246644536] [2021-10-28 09:57:31,406 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:57:31,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470904234] [2021-10-28 09:57:31,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470904234] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:57:31,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:57:31,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-10-28 09:57:31,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157959876] [2021-10-28 09:57:31,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:57:31,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:57:31,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:57:31,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:57:31,426 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:57:31,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:31,454 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2021-10-28 09:57:31,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:57:31,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-28 09:57:31,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:57:31,456 INFO L225 Difference]: With dead ends: 38 [2021-10-28 09:57:31,456 INFO L226 Difference]: Without dead ends: 20 [2021-10-28 09:57:31,456 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:57:31,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-28 09:57:31,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-28 09:57:31,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.0) internal successors, (19), 19 states have internal predecessors, (19), 0 states have call successors, (0), 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 09:57:31,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2021-10-28 09:57:31,460 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 18 [2021-10-28 09:57:31,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:57:31,461 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2021-10-28 09:57:31,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:57:31,461 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2021-10-28 09:57:31,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 09:57:31,462 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:57:31,462 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:31,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-10-28 09:57:31,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:57:31,688 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:57:31,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:31,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1197855989, now seen corresponding path program 1 times [2021-10-28 09:57:31,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:31,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393201187] [2021-10-28 09:57:31,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:31,689 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:31,702 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:57:31,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1410645583] [2021-10-28 09:57:31,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:31,703 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:57:31,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:57:31,704 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:57:31,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 09:57:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:57:31,810 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:57:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:57:31,857 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:57:31,866 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:57:31,867 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:57:31,870 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:57:31,870 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:57:31,870 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:57:31,871 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:57:31,871 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:57:31,871 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:57:31,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:57:32,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:57:32,092 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:32,096 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:57:32,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:57:32 BoogieIcfgContainer [2021-10-28 09:57:32,141 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:57:32,141 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:57:32,142 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:57:32,142 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:57:32,143 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:57:27" (3/4) ... [2021-10-28 09:57:32,145 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 09:57:32,199 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:57:32,200 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:57:32,201 INFO L168 Benchmark]: Toolchain (without parser) took 5140.06 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 57.9 MB in the beginning and 76.8 MB in the end (delta: -18.9 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:57:32,202 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory was 64.0 MB in the beginning and 64.0 MB in the end (delta: 32.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:57:32,203 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.08 ms. Allocated memory is still 92.3 MB. Free memory was 57.8 MB in the beginning and 68.3 MB in the end (delta: -10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:57:32,203 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.16 ms. Allocated memory is still 92.3 MB. Free memory was 68.3 MB in the beginning and 66.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:57:32,204 INFO L168 Benchmark]: Boogie Preprocessor took 29.06 ms. Allocated memory is still 92.3 MB. Free memory was 66.6 MB in the beginning and 65.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:57:32,204 INFO L168 Benchmark]: RCFGBuilder took 467.84 ms. Allocated memory is still 92.3 MB. Free memory was 65.5 MB in the beginning and 54.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:57:32,205 INFO L168 Benchmark]: TraceAbstraction took 4211.58 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 54.4 MB in the beginning and 78.9 MB in the end (delta: -24.6 MB). Peak memory consumption was 1.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:57:32,206 INFO L168 Benchmark]: Witness Printer took 58.19 ms. Allocated memory is still 115.3 MB. Free memory was 78.9 MB in the beginning and 76.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:57:32,209 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory was 64.0 MB in the beginning and 64.0 MB in the end (delta: 32.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 320.08 ms. Allocated memory is still 92.3 MB. Free memory was 57.8 MB in the beginning and 68.3 MB in the end (delta: -10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.16 ms. Allocated memory is still 92.3 MB. Free memory was 68.3 MB in the beginning and 66.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.06 ms. Allocated memory is still 92.3 MB. Free memory was 66.6 MB in the beginning and 65.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 467.84 ms. Allocated memory is still 92.3 MB. Free memory was 65.5 MB in the beginning and 54.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4211.58 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 54.4 MB in the beginning and 78.9 MB in the end (delta: -24.6 MB). Peak memory consumption was 1.2 MB. Max. memory is 16.1 GB. * Witness Printer took 58.19 ms. Allocated memory is still 115.3 MB. Free memory was 78.9 MB in the beginning and 76.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 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] int A, B; [L25] int r, d, p, q; [L26] A = __VERIFIER_nondet_int() [L27] B = 1 [L29] r = A [L30] d = B [L31] p = 1 [L32] q = 0 VAL [counter=0] [L34] EXPR counter++ VAL [counter=1] [L34] COND TRUE counter++<1 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=1] [L34] EXPR counter++ VAL [counter=2] [L34] COND FALSE !(counter++<1) [L44] EXPR counter++ VAL [counter=3] [L44] COND FALSE !(counter++<1) [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND TRUE !(cond) VAL [counter=3] [L17] reach_error() VAL [counter=3] - 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, 39 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 179 SDtfs, 180 SDslu, 209 SDs, 0 SdLazy, 132 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=4, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 52 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 264 SizeOfPredicates, 11 NumberOfNonLiveVariables, 387 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 6/7 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 09:57:32,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e1c0bcf-2784-4177-a7c6-546cc7c7682d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...