./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.1.prop1-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.1.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3f2939586d95d2403c35c316707e3e1d86d440a4937d82cbe4131dbb4335583f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:35:52,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:35:52,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:35:52,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:35:52,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:35:52,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:35:52,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:35:52,933 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:35:52,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:35:52,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:35:52,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:35:52,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:35:52,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:35:52,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:35:52,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:35:52,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:35:52,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:35:52,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:35:52,964 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:35:52,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:35:52,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:35:52,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:35:52,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:35:52,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:35:52,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:35:52,995 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:35:52,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:35:52,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:35:52,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:35:52,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:35:53,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:35:53,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:35:53,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:35:53,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:35:53,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:35:53,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:35:53,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:35:53,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:35:53,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:35:53,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:35:53,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:35:53,014 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 12:35:53,076 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:35:53,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:35:53,077 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:35:53,078 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:35:53,078 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:35:53,079 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:35:53,079 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:35:53,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:35:53,080 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:35:53,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:35:53,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:35:53,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:35:53,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:35:53,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:35:53,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:35:53,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:35:53,082 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:35:53,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:35:53,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:35:53,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:35:53,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:35:53,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:35:53,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:35:53,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:35:53,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:35:53,085 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:35:53,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:35:53,085 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:35:53,086 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:35:53,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:35:53,086 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_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f2939586d95d2403c35c316707e3e1d86d440a4937d82cbe4131dbb4335583f [2022-11-20 12:35:53,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:35:53,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:35:53,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:35:53,481 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:35:53,486 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:35:53,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.1.prop1-back-serstep.c [2022-11-20 12:35:57,004 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:35:57,538 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:35:57,539 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.1.prop1-back-serstep.c [2022-11-20 12:35:57,560 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/data/867013255/eb5a0e4bef8a4a7786f7852b70782297/FLAG7f00ba9e6 [2022-11-20 12:35:57,579 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/data/867013255/eb5a0e4bef8a4a7786f7852b70782297 [2022-11-20 12:35:57,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:35:57,585 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:35:57,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:35:57,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:35:57,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:35:57,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:35:57" (1/1) ... [2022-11-20 12:35:57,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53ab189a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:57, skipping insertion in model container [2022-11-20 12:35:57,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:35:57" (1/1) ... [2022-11-20 12:35:57,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:35:57,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:35:57,957 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.1.prop1-back-serstep.c[1014,1027] [2022-11-20 12:35:58,134 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractShiftRight(BitabsTranslation.java:159) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructBinaryBitwiseIntegerExpression(IntegerTranslation.java:190) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.ExpressionTranslation.constructBinaryBitwiseExpression(ExpressionTranslation.java:131) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CExpressionTranslator.handleBitshiftOperation(CExpressionTranslator.java:418) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:834) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:728) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1126) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:728) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1413) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleLoops(CHandler.java:3466) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1456) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:223) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1489) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3314) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2388) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:600) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-20 12:35:58,140 INFO L158 Benchmark]: Toolchain (without parser) took 554.22ms. Allocated memory is still 157.3MB. Free memory was 122.7MB in the beginning and 101.3MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-20 12:35:58,141 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 125.8MB. Free memory was 98.8MB in the beginning and 98.7MB in the end (delta: 86.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:35:58,142 INFO L158 Benchmark]: CACSL2BoogieTranslator took 549.33ms. Allocated memory is still 157.3MB. Free memory was 122.7MB in the beginning and 101.3MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-20 12:35:58,143 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 125.8MB. Free memory was 98.8MB in the beginning and 98.7MB in the end (delta: 86.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 549.33ms. Allocated memory is still 157.3MB. Free memory was 122.7MB in the beginning and 101.3MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: NullPointerException: null: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.1.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3f2939586d95d2403c35c316707e3e1d86d440a4937d82cbe4131dbb4335583f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:36:00,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:36:00,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:36:01,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:36:01,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:36:01,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:36:01,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:36:01,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:36:01,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:36:01,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:36:01,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:36:01,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:36:01,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:36:01,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:36:01,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:36:01,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:36:01,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:36:01,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:36:01,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:36:01,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:36:01,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:36:01,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:36:01,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:36:01,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:36:01,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:36:01,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:36:01,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:36:01,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:36:01,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:36:01,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:36:01,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:36:01,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:36:01,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:36:01,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:36:01,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:36:01,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:36:01,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:36:01,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:36:01,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:36:01,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:36:01,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:36:01,156 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 12:36:01,207 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:36:01,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:36:01,210 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:36:01,210 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:36:01,211 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:36:01,211 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:36:01,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:36:01,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:36:01,213 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:36:01,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:36:01,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:36:01,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:36:01,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:36:01,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:36:01,216 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:36:01,216 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 12:36:01,216 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 12:36:01,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:36:01,217 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:36:01,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:36:01,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:36:01,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:36:01,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:36:01,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:36:01,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:36:01,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:36:01,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:36:01,219 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 12:36:01,220 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 12:36:01,220 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:36:01,220 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:36:01,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:36:01,221 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 12:36:01,221 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f2939586d95d2403c35c316707e3e1d86d440a4937d82cbe4131dbb4335583f [2022-11-20 12:36:01,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:36:01,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:36:01,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:36:01,750 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:36:01,751 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:36:01,753 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.1.prop1-back-serstep.c [2022-11-20 12:36:05,468 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:36:05,988 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:36:05,988 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.1.prop1-back-serstep.c [2022-11-20 12:36:06,020 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/data/6ddc99a6c/29ab361883dc49779fc9840937bee867/FLAGd49805192 [2022-11-20 12:36:06,045 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/data/6ddc99a6c/29ab361883dc49779fc9840937bee867 [2022-11-20 12:36:06,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:36:06,050 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:36:06,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:36:06,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:36:06,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:36:06,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:36:06" (1/1) ... [2022-11-20 12:36:06,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27a500ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:06, skipping insertion in model container [2022-11-20 12:36:06,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:36:06" (1/1) ... [2022-11-20 12:36:06,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:36:06,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:36:06,458 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.1.prop1-back-serstep.c[1014,1027] [2022-11-20 12:36:07,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:36:07,045 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:36:07,059 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.1.prop1-back-serstep.c[1014,1027] [2022-11-20 12:36:07,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:36:07,325 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:36:07,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:07 WrapperNode [2022-11-20 12:36:07,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:36:07,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:36:07,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:36:07,328 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:36:07,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:07" (1/1) ... [2022-11-20 12:36:07,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:07" (1/1) ... [2022-11-20 12:36:07,651 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2915 [2022-11-20 12:36:07,652 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:36:07,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:36:07,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:36:07,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:36:07,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:07" (1/1) ... [2022-11-20 12:36:07,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:07" (1/1) ... [2022-11-20 12:36:07,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:07" (1/1) ... [2022-11-20 12:36:07,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:07" (1/1) ... [2022-11-20 12:36:07,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:07" (1/1) ... [2022-11-20 12:36:07,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:07" (1/1) ... [2022-11-20 12:36:07,816 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:07" (1/1) ... [2022-11-20 12:36:07,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:07" (1/1) ... [2022-11-20 12:36:07,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:36:07,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:36:07,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:36:07,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:36:07,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:07" (1/1) ... [2022-11-20 12:36:07,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:36:07,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:36:07,961 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:36:07,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:36:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:36:08,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:36:08,846 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:36:08,863 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:36:17,630 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:36:17,638 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:36:17,638 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 12:36:17,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:36:17 BoogieIcfgContainer [2022-11-20 12:36:17,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:36:17,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:36:17,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:36:17,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:36:17,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:36:06" (1/3) ... [2022-11-20 12:36:17,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a946b1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:36:17, skipping insertion in model container [2022-11-20 12:36:17,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:07" (2/3) ... [2022-11-20 12:36:17,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a946b1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:36:17, skipping insertion in model container [2022-11-20 12:36:17,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:36:17" (3/3) ... [2022-11-20 12:36:17,652 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.needham.1.prop1-back-serstep.c [2022-11-20 12:36:17,676 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:36:17,676 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:36:17,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:36:17,758 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5c958ac8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:36:17,758 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:36:17,764 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:36:17,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 12:36:17,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:36:17,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 12:36:17,776 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:36:17,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:17,784 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-20 12:36:17,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:36:17,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274897512] [2022-11-20 12:36:17,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:17,807 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:36:17,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:36:17,815 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:36:17,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 12:36:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:18,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:36:18,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:36:18,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:36:18,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:36:18,928 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:36:18,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274897512] [2022-11-20 12:36:18,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [274897512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:36:18,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:36:18,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:36:18,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799553849] [2022-11-20 12:36:18,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:36:18,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:36:18,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:36:18,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:36:18,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:36:18,993 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:36:20,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:36:21,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:36:21,054 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-20 12:36:21,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:36:21,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 12:36:21,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:36:21,067 INFO L225 Difference]: With dead ends: 20 [2022-11-20 12:36:21,068 INFO L226 Difference]: Without dead ends: 11 [2022-11-20 12:36:21,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:36:21,075 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:36:21,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-20 12:36:21,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-20 12:36:21,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-20 12:36:21,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:36:21,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-20 12:36:21,119 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-20 12:36:21,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:36:21,120 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-20 12:36:21,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:36:21,120 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-20 12:36:21,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 12:36:21,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:36:21,121 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-20 12:36:21,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:36:21,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:36:21,338 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:36:21,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:21,339 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-20 12:36:21,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:36:21,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [9569364] [2022-11-20 12:36:21,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:21,342 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:36:21,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:36:21,343 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:36:21,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 12:36:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:25,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 2586 conjuncts, 62 conjunts are in the unsatisfiable core [2022-11-20 12:36:25,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:36:26,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:36:26,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:36:27,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:36:27,237 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:36:27,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [9569364] [2022-11-20 12:36:27,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [9569364] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:36:27,238 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:36:27,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 12:36:27,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458615547] [2022-11-20 12:36:27,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:36:27,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:36:27,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:36:27,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:36:27,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:36:27,242 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:36:29,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:36:32,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:36:32,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:36:32,315 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-20 12:36:32,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:36:32,316 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 12:36:32,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:36:32,317 INFO L225 Difference]: With dead ends: 16 [2022-11-20 12:36:32,317 INFO L226 Difference]: Without dead ends: 14 [2022-11-20 12:36:32,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:36:32,319 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:36:32,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 25 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 1 Unknown, 13 Unchecked, 5.0s Time] [2022-11-20 12:36:32,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-20 12:36:32,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-20 12:36:32,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:36:32,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-20 12:36:32,327 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-20 12:36:32,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:36:32,327 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-20 12:36:32,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:36:32,328 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-20 12:36:32,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 12:36:32,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:36:32,329 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-20 12:36:32,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:36:32,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:36:32,543 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:36:32,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:32,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-20 12:36:32,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:36:32,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [107804824] [2022-11-20 12:36:32,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:36:32,551 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:36:32,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:36:32,553 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:36:32,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 12:36:40,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:36:40,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:36:40,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 4832 conjuncts, 256 conjunts are in the unsatisfiable core [2022-11-20 12:36:40,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:36:47,372 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:36:47,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:37:19,882 WARN L233 SmtUtils]: Spent 25.51s on a formula simplification. DAG size of input: 595 DAG size of output: 585 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:37:29,203 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 593 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:37:29,957 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:37:29,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:37:29,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [107804824] [2022-11-20 12:37:29,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [107804824] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:37:29,958 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:37:29,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-20 12:37:29,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105534682] [2022-11-20 12:37:29,959 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:37:29,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:37:29,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:37:29,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:37:29,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:37:29,961 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:37:32,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:37:35,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:37:35,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:37:35,487 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-11-20 12:37:35,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:37:35,488 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 12:37:35,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:37:35,488 INFO L225 Difference]: With dead ends: 18 [2022-11-20 12:37:35,489 INFO L226 Difference]: Without dead ends: 16 [2022-11-20 12:37:35,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 41.7s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:37:35,490 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:37:35,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 27 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 2 Unknown, 18 Unchecked, 4.8s Time] [2022-11-20 12:37:35,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-20 12:37:35,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2022-11-20 12:37:35,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:37:35,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-20 12:37:35,499 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-20 12:37:35,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:37:35,500 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-20 12:37:35,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:37:35,500 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-20 12:37:35,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 12:37:35,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:37:35,501 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-20 12:37:35,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:37:35,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:37:35,715 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:37:35,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:35,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-20 12:37:35,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:37:35,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056189098] [2022-11-20 12:37:35,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:37:35,722 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:37:35,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:37:35,728 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:37:35,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 12:37:59,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 12:37:59,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:37:59,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 7078 conjuncts, 588 conjunts are in the unsatisfiable core [2022-11-20 12:37:59,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:39:54,975 WARN L233 SmtUtils]: Spent 1.44m on a formula simplification. DAG size of input: 1189 DAG size of output: 1173 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:39:58,650 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:58,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:41:39,096 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:41:39,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:41:39,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056189098] [2022-11-20 12:41:39,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1056189098] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:41:39,097 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:41:39,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-20 12:41:39,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937094119] [2022-11-20 12:41:39,098 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:41:39,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:41:39,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:41:39,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:41:39,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=98, Unknown=2, NotChecked=0, Total=132 [2022-11-20 12:41:39,100 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:43,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:42:26,588 WARN L233 SmtUtils]: Spent 17.26s on a formula simplification. DAG size of input: 1454 DAG size of output: 488 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:42:36,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:36,234 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-11-20 12:42:36,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:42:36,239 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-20 12:42:36,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:36,240 INFO L225 Difference]: With dead ends: 22 [2022-11-20 12:42:36,240 INFO L226 Difference]: Without dead ends: 20 [2022-11-20 12:42:36,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 238.2s TimeCoverageRelationStatistics Valid=76, Invalid=192, Unknown=4, NotChecked=0, Total=272 [2022-11-20 12:42:36,242 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:36,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 29 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 12 Unchecked, 2.3s Time] [2022-11-20 12:42:36,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-20 12:42:36,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-11-20 12:42:36,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:36,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-20 12:42:36,266 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2022-11-20 12:42:36,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:36,266 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-20 12:42:36,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:36,267 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-20 12:42:36,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 12:42:36,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:36,268 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-11-20 12:42:36,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:42:36,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:36,474 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:36,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:36,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 4 times [2022-11-20 12:42:36,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:42:36,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1807866647] [2022-11-20 12:42:36,482 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:42:36,483 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:42:36,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:42:36,484 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:42:36,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc49de3-27fa-4929-ae7a-0af6db41ae80/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 12:43:02,172 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:43:02,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:43:02,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 9324 conjuncts, 1822 conjunts are in the unsatisfiable core [2022-11-20 12:43:02,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:17,988 WARN L233 SmtUtils]: Spent 7.80s on a formula simplification. DAG size of input: 787 DAG size of output: 785 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)