./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_4+newton_2_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_2_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a8b52922fdfe93dd417523e4e63c80c50c6631dbe5ff22aa1a5e25c09a617278 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 10:59:26,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 10:59:26,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 10:59:26,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 10:59:26,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 10:59:26,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 10:59:26,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 10:59:26,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 10:59:26,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 10:59:26,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 10:59:26,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 10:59:26,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 10:59:26,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 10:59:26,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 10:59:26,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 10:59:26,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 10:59:26,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 10:59:26,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 10:59:26,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 10:59:26,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 10:59:26,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 10:59:26,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 10:59:26,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 10:59:26,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 10:59:26,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 10:59:26,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 10:59:26,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 10:59:26,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 10:59:26,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 10:59:26,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 10:59:26,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 10:59:26,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 10:59:26,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 10:59:26,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 10:59:26,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 10:59:26,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 10:59:26,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 10:59:26,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 10:59:26,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 10:59:26,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 10:59:26,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 10:59:26,140 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 10:59:26,178 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 10:59:26,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 10:59:26,184 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 10:59:26,184 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 10:59:26,185 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 10:59:26,185 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 10:59:26,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 10:59:26,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 10:59:26,186 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 10:59:26,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 10:59:26,188 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 10:59:26,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 10:59:26,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 10:59:26,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 10:59:26,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 10:59:26,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 10:59:26,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 10:59:26,189 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 10:59:26,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 10:59:26,190 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 10:59:26,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 10:59:26,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 10:59:26,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 10:59:26,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 10:59:26,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:59:26,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 10:59:26,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 10:59:26,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 10:59:26,193 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 10:59:26,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 10:59:26,193 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 10:59:26,193 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 10:59:26,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 10:59:26,194 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_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8b52922fdfe93dd417523e4e63c80c50c6631dbe5ff22aa1a5e25c09a617278 [2022-11-16 10:59:26,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 10:59:26,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 10:59:26,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 10:59:26,613 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 10:59:26,614 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 10:59:26,615 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/gcd_4+newton_2_3.i [2022-11-16 10:59:26,697 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/data/33c27b36f/2f882adc038349bb827d606c469b1d5f/FLAG18c235846 [2022-11-16 10:59:27,224 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 10:59:27,224 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/sv-benchmarks/c/combinations/gcd_4+newton_2_3.i [2022-11-16 10:59:27,232 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/data/33c27b36f/2f882adc038349bb827d606c469b1d5f/FLAG18c235846 [2022-11-16 10:59:27,593 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/data/33c27b36f/2f882adc038349bb827d606c469b1d5f [2022-11-16 10:59:27,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 10:59:27,600 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 10:59:27,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 10:59:27,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 10:59:27,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 10:59:27,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:59:27" (1/1) ... [2022-11-16 10:59:27,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f8fc758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:27, skipping insertion in model container [2022-11-16 10:59:27,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:59:27" (1/1) ... [2022-11-16 10:59:27,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 10:59:27,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 10:59:27,851 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/sv-benchmarks/c/combinations/gcd_4+newton_2_3.i[1224,1237] [2022-11-16 10:59:27,905 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/sv-benchmarks/c/combinations/gcd_4+newton_2_3.i[2827,2840] [2022-11-16 10:59:27,906 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:59:27,919 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 10:59:27,945 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/sv-benchmarks/c/combinations/gcd_4+newton_2_3.i[1224,1237] [2022-11-16 10:59:27,963 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/sv-benchmarks/c/combinations/gcd_4+newton_2_3.i[2827,2840] [2022-11-16 10:59:27,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:59:27,996 INFO L208 MainTranslator]: Completed translation [2022-11-16 10:59:27,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:27 WrapperNode [2022-11-16 10:59:27,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 10:59:27,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 10:59:27,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 10:59:27,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 10:59:28,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:27" (1/1) ... [2022-11-16 10:59:28,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:27" (1/1) ... [2022-11-16 10:59:28,065 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 80 [2022-11-16 10:59:28,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 10:59:28,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 10:59:28,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 10:59:28,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 10:59:28,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:27" (1/1) ... [2022-11-16 10:59:28,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:27" (1/1) ... [2022-11-16 10:59:28,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:27" (1/1) ... [2022-11-16 10:59:28,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:27" (1/1) ... [2022-11-16 10:59:28,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:27" (1/1) ... [2022-11-16 10:59:28,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:27" (1/1) ... [2022-11-16 10:59:28,110 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:27" (1/1) ... [2022-11-16 10:59:28,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:27" (1/1) ... [2022-11-16 10:59:28,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 10:59:28,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 10:59:28,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 10:59:28,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 10:59:28,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:27" (1/1) ... [2022-11-16 10:59:28,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:59:28,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:59:28,173 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 10:59:28,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 10:59:28,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 10:59:28,221 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-16 10:59:28,221 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-16 10:59:28,221 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-16 10:59:28,223 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-16 10:59:28,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 10:59:28,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 10:59:28,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 10:59:28,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 10:59:28,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 10:59:28,322 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 10:59:28,324 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 10:59:28,552 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 10:59:28,559 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 10:59:28,559 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 10:59:28,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:59:28 BoogieIcfgContainer [2022-11-16 10:59:28,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 10:59:28,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 10:59:28,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 10:59:28,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 10:59:28,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:59:27" (1/3) ... [2022-11-16 10:59:28,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8ccebd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:59:28, skipping insertion in model container [2022-11-16 10:59:28,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:27" (2/3) ... [2022-11-16 10:59:28,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8ccebd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:59:28, skipping insertion in model container [2022-11-16 10:59:28,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:59:28" (3/3) ... [2022-11-16 10:59:28,574 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_2_3.i [2022-11-16 10:59:28,597 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 10:59:28,598 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 10:59:28,691 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 10:59:28,705 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;@6e9e20a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 10:59:28,705 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 10:59:28,711 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 30 states have (on average 1.4) internal successors, (42), 32 states have internal predecessors, (42), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 10:59:28,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 10:59:28,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:59:28,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:59:28,721 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:59:28,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:59:28,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1780479560, now seen corresponding path program 1 times [2022-11-16 10:59:28,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:59:28,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482416042] [2022-11-16 10:59:28,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:59:28,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:59:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:28,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:59:28,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482416042] [2022-11-16 10:59:28,934 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 10:59:28,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614807709] [2022-11-16 10:59:28,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:59:28,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:59:28,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:59:28,943 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:59:28,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 10:59:29,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:29,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 10:59:29,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:59:29,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:59:29,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:59:29,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614807709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:59:29,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:59:29,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:59:29,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227441413] [2022-11-16 10:59:29,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:59:29,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 10:59:29,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:59:29,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 10:59:29,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 10:59:29,247 INFO L87 Difference]: Start difference. First operand has 43 states, 30 states have (on average 1.4) internal successors, (42), 32 states have internal predecessors, (42), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:59:29,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:59:29,299 INFO L93 Difference]: Finished difference Result 91 states and 124 transitions. [2022-11-16 10:59:29,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 10:59:29,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 10:59:29,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:59:29,311 INFO L225 Difference]: With dead ends: 91 [2022-11-16 10:59:29,311 INFO L226 Difference]: Without dead ends: 42 [2022-11-16 10:59:29,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 10:59:29,319 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 11 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 10:59:29,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 92 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 10:59:29,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-16 10:59:29,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2022-11-16 10:59:29,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 28 states have internal predecessors, (33), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 10:59:29,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2022-11-16 10:59:29,381 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 11 [2022-11-16 10:59:29,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:59:29,382 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2022-11-16 10:59:29,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:59:29,383 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2022-11-16 10:59:29,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 10:59:29,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:59:29,387 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:59:29,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 10:59:29,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-16 10:59:29,593 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:59:29,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:59:29,594 INFO L85 PathProgramCache]: Analyzing trace with hash -5472198, now seen corresponding path program 1 times [2022-11-16 10:59:29,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:59:29,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319777262] [2022-11-16 10:59:29,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:59:29,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:59:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:29,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:59:29,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319777262] [2022-11-16 10:59:29,652 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 10:59:29,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803324544] [2022-11-16 10:59:29,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:59:29,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:59:29,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:59:29,661 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:59:29,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 10:59:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:29,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 10:59:29,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:59:29,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:59:29,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:59:29,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803324544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:59:29,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:59:29,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:59:29,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56392660] [2022-11-16 10:59:29,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:59:29,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 10:59:29,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:59:29,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 10:59:29,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 10:59:29,784 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:59:29,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:59:29,836 INFO L93 Difference]: Finished difference Result 64 states and 82 transitions. [2022-11-16 10:59:29,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 10:59:29,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 10:59:29,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:59:29,838 INFO L225 Difference]: With dead ends: 64 [2022-11-16 10:59:29,839 INFO L226 Difference]: Without dead ends: 47 [2022-11-16 10:59:29,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 10:59:29,841 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 10:59:29,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 72 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 10:59:29,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-16 10:59:29,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 38. [2022-11-16 10:59:29,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 28 states have internal predecessors, (31), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 10:59:29,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2022-11-16 10:59:29,866 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 11 [2022-11-16 10:59:29,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:59:29,867 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2022-11-16 10:59:29,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:59:29,868 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2022-11-16 10:59:29,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 10:59:29,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:59:29,869 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:59:29,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 10:59:30,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:59:30,070 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:59:30,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:59:30,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1715037691, now seen corresponding path program 1 times [2022-11-16 10:59:30,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:59:30,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93601713] [2022-11-16 10:59:30,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:59:30,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:59:30,089 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:59:30,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1274901398] [2022-11-16 10:59:30,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:59:30,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:59:30,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:59:30,101 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:59:30,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 10:59:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:30,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 10:59:30,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:59:30,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:59:30,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:59:30,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:59:30,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93601713] [2022-11-16 10:59:30,253 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:59:30,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274901398] [2022-11-16 10:59:30,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274901398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:59:30,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:59:30,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:59:30,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262781382] [2022-11-16 10:59:30,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:59:30,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 10:59:30,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:59:30,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 10:59:30,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 10:59:30,256 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:59:30,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:59:30,277 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2022-11-16 10:59:30,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 10:59:30,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-16 10:59:30,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:59:30,279 INFO L225 Difference]: With dead ends: 53 [2022-11-16 10:59:30,279 INFO L226 Difference]: Without dead ends: 40 [2022-11-16 10:59:30,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 10:59:30,281 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 10:59:30,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 10:59:30,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-16 10:59:30,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-11-16 10:59:30,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 30 states have internal predecessors, (33), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 10:59:30,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2022-11-16 10:59:30,289 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 15 [2022-11-16 10:59:30,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:59:30,290 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2022-11-16 10:59:30,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:59:30,290 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2022-11-16 10:59:30,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 10:59:30,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:59:30,291 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:59:30,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 10:59:30,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:59:30,511 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:59:30,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:59:30,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1030095042, now seen corresponding path program 1 times [2022-11-16 10:59:30,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:59:30,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981865799] [2022-11-16 10:59:30,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:59:30,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:59:30,530 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:59:30,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [368639915] [2022-11-16 10:59:30,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:59:30,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:59:30,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:59:30,542 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:59:30,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 10:59:30,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:30,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 10:59:30,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:59:30,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:59:30,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:59:30,814 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:59:30,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:59:30,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981865799] [2022-11-16 10:59:30,815 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:59:30,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368639915] [2022-11-16 10:59:30,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368639915] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:59:30,815 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:59:30,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-16 10:59:30,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547082273] [2022-11-16 10:59:30,816 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:59:30,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:59:30,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:59:30,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:59:30,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:59:30,818 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:59:30,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:59:30,862 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2022-11-16 10:59:30,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:59:30,863 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-16 10:59:30,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:59:30,864 INFO L225 Difference]: With dead ends: 57 [2022-11-16 10:59:30,864 INFO L226 Difference]: Without dead ends: 44 [2022-11-16 10:59:30,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:59:30,866 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 10:59:30,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 100 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 10:59:30,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-16 10:59:30,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-11-16 10:59:30,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 32 states have (on average 1.15625) internal successors, (37), 34 states have internal predecessors, (37), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 10:59:30,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2022-11-16 10:59:30,875 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 17 [2022-11-16 10:59:30,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:59:30,876 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2022-11-16 10:59:30,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:59:30,876 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2022-11-16 10:59:30,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 10:59:30,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:59:30,877 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:59:30,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 10:59:31,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:59:31,083 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:59:31,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:59:31,084 INFO L85 PathProgramCache]: Analyzing trace with hash -626365316, now seen corresponding path program 2 times [2022-11-16 10:59:31,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:59:31,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731185842] [2022-11-16 10:59:31,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:59:31,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:59:31,106 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:59:31,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [755389454] [2022-11-16 10:59:31,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:59:31,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:59:31,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:59:31,113 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:59:31,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 10:59:31,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 10:59:31,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:59:31,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 10:59:31,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:59:31,366 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:59:31,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:59:31,506 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:59:31,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:59:31,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731185842] [2022-11-16 10:59:31,506 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:59:31,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755389454] [2022-11-16 10:59:31,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755389454] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:59:31,507 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:59:31,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-16 10:59:31,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015819453] [2022-11-16 10:59:31,507 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:59:31,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 10:59:31,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:59:31,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 10:59:31,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-16 10:59:31,508 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:59:31,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:59:31,664 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2022-11-16 10:59:31,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 10:59:31,665 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-16 10:59:31,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:59:31,666 INFO L225 Difference]: With dead ends: 65 [2022-11-16 10:59:31,666 INFO L226 Difference]: Without dead ends: 50 [2022-11-16 10:59:31,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-11-16 10:59:31,668 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 16 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:59:31,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 196 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 10:59:31,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-16 10:59:31,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-11-16 10:59:31,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 40 states have internal predecessors, (44), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 10:59:31,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2022-11-16 10:59:31,676 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 21 [2022-11-16 10:59:31,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:59:31,677 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2022-11-16 10:59:31,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:59:31,677 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2022-11-16 10:59:31,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 10:59:31,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:59:31,678 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:59:31,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 10:59:31,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:59:31,890 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:59:31,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:59:31,891 INFO L85 PathProgramCache]: Analyzing trace with hash 2101905688, now seen corresponding path program 1 times [2022-11-16 10:59:31,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:59:31,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257834700] [2022-11-16 10:59:31,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:59:31,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:59:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 10:59:31,915 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 10:59:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 10:59:31,944 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 10:59:31,944 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 10:59:31,945 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-16 10:59:31,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-16 10:59:31,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 10:59:31,952 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-11-16 10:59:31,956 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 10:59:31,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 10:59:31 BoogieIcfgContainer [2022-11-16 10:59:31,981 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 10:59:31,982 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 10:59:31,982 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 10:59:31,982 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 10:59:31,983 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:59:28" (3/4) ... [2022-11-16 10:59:31,986 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 10:59:31,986 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 10:59:31,987 INFO L158 Benchmark]: Toolchain (without parser) took 4386.76ms. Allocated memory is still 155.2MB. Free memory was 124.5MB in the beginning and 70.0MB in the end (delta: 54.4MB). Peak memory consumption was 54.4MB. Max. memory is 16.1GB. [2022-11-16 10:59:31,987 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 88.1MB. Free memory was 45.3MB in the beginning and 45.3MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 10:59:31,988 INFO L158 Benchmark]: CACSL2BoogieTranslator took 391.66ms. Allocated memory is still 155.2MB. Free memory was 124.5MB in the beginning and 131.3MB in the end (delta: -6.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 10:59:31,988 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.18ms. Allocated memory is still 155.2MB. Free memory was 131.3MB in the beginning and 129.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 10:59:31,989 INFO L158 Benchmark]: Boogie Preprocessor took 47.07ms. Allocated memory is still 155.2MB. Free memory was 129.2MB in the beginning and 128.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 10:59:31,989 INFO L158 Benchmark]: RCFGBuilder took 447.30ms. Allocated memory is still 155.2MB. Free memory was 128.1MB in the beginning and 115.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 10:59:31,989 INFO L158 Benchmark]: TraceAbstraction took 3416.92ms. Allocated memory is still 155.2MB. Free memory was 115.0MB in the beginning and 70.5MB in the end (delta: 44.6MB). Peak memory consumption was 47.1MB. Max. memory is 16.1GB. [2022-11-16 10:59:31,990 INFO L158 Benchmark]: Witness Printer took 4.30ms. Allocated memory is still 155.2MB. Free memory was 70.5MB in the beginning and 70.0MB in the end (delta: 452.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 10:59:31,992 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 88.1MB. Free memory was 45.3MB in the beginning and 45.3MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 391.66ms. Allocated memory is still 155.2MB. Free memory was 124.5MB in the beginning and 131.3MB in the end (delta: -6.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.18ms. Allocated memory is still 155.2MB. Free memory was 131.3MB in the beginning and 129.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.07ms. Allocated memory is still 155.2MB. Free memory was 129.2MB in the beginning and 128.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 447.30ms. Allocated memory is still 155.2MB. Free memory was 128.1MB in the beginning and 115.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3416.92ms. Allocated memory is still 155.2MB. Free memory was 115.0MB in the beginning and 70.5MB in the end (delta: 44.6MB). Peak memory consumption was 47.1MB. Max. memory is 16.1GB. * Witness Printer took 4.30ms. Allocated memory is still 155.2MB. Free memory was 70.5MB in the beginning and 70.0MB in the end (delta: 452.0kB). There was no memory consumed. Max. memory is 16.1GB. * 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 - UnprovableResult [Line: 109]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 98, overapproximation of someBinaryDOUBLEComparisonOperation at line 108, overapproximation of someBinaryArithmeticFLOAToperation at line 102. Possible FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -0.6f && IN < 0.6f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -0.6f && IN < 0.6f) [L100] CALL, EXPR f(IN) VAL [\old(x)=113] [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=113, x=113] [L100] RET, EXPR f(IN) VAL [f(IN)=110, IN=113] [L100] CALL, EXPR fp(IN) VAL [\old(x)=113] [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=113, x=113] [L100] RET, EXPR fp(IN) VAL [f(IN)=110, fp(IN)=109, IN=113] [L100] float x = IN - f(IN)/fp(IN); [L102] CALL, EXPR f(x) VAL [\old(x)=111] [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=111, x=111] [L102] RET, EXPR f(x) VAL [f(x)=114, IN=113, x=111] [L102] CALL, EXPR fp(x) VAL [\old(x)=111] [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=111, x=111] [L102] RET, EXPR fp(x) VAL [f(x)=114, fp(x)=112, IN=113, x=111] [L102] x = x - f(x)/fp(x) [L108] COND TRUE !(x < 0.1) VAL [IN=113] [L109] reach_error() VAL [IN=113] - UnprovableResult [Line: 27]: 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 4 procedures, 43 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 3.3s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41 mSDsluCounter, 528 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 332 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 123 IncrementalHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 196 mSDtfsCounter, 123 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=5, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 343 SizeOfPredicates, 17 NumberOfNonLiveVariables, 412 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 17/41 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 could not prove your program: unable to determine feasibility of some traces [2022-11-16 10:59:32,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_2_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a8b52922fdfe93dd417523e4e63c80c50c6631dbe5ff22aa1a5e25c09a617278 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 10:59:34,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 10:59:34,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 10:59:34,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 10:59:34,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 10:59:34,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 10:59:34,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 10:59:34,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 10:59:34,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 10:59:34,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 10:59:34,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 10:59:34,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 10:59:34,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 10:59:34,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 10:59:34,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 10:59:34,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 10:59:34,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 10:59:34,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 10:59:34,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 10:59:34,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 10:59:34,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 10:59:34,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 10:59:34,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 10:59:34,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 10:59:34,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 10:59:34,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 10:59:34,572 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 10:59:34,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 10:59:34,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 10:59:34,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 10:59:34,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 10:59:34,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 10:59:34,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 10:59:34,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 10:59:34,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 10:59:34,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 10:59:34,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 10:59:34,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 10:59:34,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 10:59:34,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 10:59:34,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 10:59:34,590 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-16 10:59:34,613 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 10:59:34,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 10:59:34,614 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 10:59:34,614 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 10:59:34,615 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 10:59:34,615 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 10:59:34,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 10:59:34,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 10:59:34,617 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 10:59:34,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 10:59:34,618 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 10:59:34,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 10:59:34,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 10:59:34,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 10:59:34,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 10:59:34,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 10:59:34,619 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 10:59:34,620 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 10:59:34,620 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 10:59:34,620 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 10:59:34,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 10:59:34,621 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 10:59:34,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 10:59:34,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 10:59:34,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 10:59:34,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 10:59:34,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:59:34,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 10:59:34,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 10:59:34,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 10:59:34,624 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 10:59:34,624 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 10:59:34,624 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 10:59:34,624 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 10:59:34,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 10:59:34,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 10:59:34,625 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_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8b52922fdfe93dd417523e4e63c80c50c6631dbe5ff22aa1a5e25c09a617278 [2022-11-16 10:59:35,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 10:59:35,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 10:59:35,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 10:59:35,098 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 10:59:35,098 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 10:59:35,100 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/gcd_4+newton_2_3.i [2022-11-16 10:59:35,178 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/data/6c7c8311e/65dca022e99c4e99ad266f2f81fa7a27/FLAGc37c5599e [2022-11-16 10:59:35,706 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 10:59:35,707 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/sv-benchmarks/c/combinations/gcd_4+newton_2_3.i [2022-11-16 10:59:35,714 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/data/6c7c8311e/65dca022e99c4e99ad266f2f81fa7a27/FLAGc37c5599e [2022-11-16 10:59:36,083 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/data/6c7c8311e/65dca022e99c4e99ad266f2f81fa7a27 [2022-11-16 10:59:36,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 10:59:36,086 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 10:59:36,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 10:59:36,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 10:59:36,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 10:59:36,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:59:36" (1/1) ... [2022-11-16 10:59:36,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7353fd48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:36, skipping insertion in model container [2022-11-16 10:59:36,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:59:36" (1/1) ... [2022-11-16 10:59:36,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 10:59:36,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 10:59:36,289 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/sv-benchmarks/c/combinations/gcd_4+newton_2_3.i[1224,1237] [2022-11-16 10:59:36,317 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/sv-benchmarks/c/combinations/gcd_4+newton_2_3.i[2827,2840] [2022-11-16 10:59:36,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:59:36,334 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 10:59:36,384 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/sv-benchmarks/c/combinations/gcd_4+newton_2_3.i[1224,1237] [2022-11-16 10:59:36,395 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/sv-benchmarks/c/combinations/gcd_4+newton_2_3.i[2827,2840] [2022-11-16 10:59:36,396 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:59:36,412 INFO L208 MainTranslator]: Completed translation [2022-11-16 10:59:36,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:36 WrapperNode [2022-11-16 10:59:36,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 10:59:36,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 10:59:36,419 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 10:59:36,419 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 10:59:36,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:36" (1/1) ... [2022-11-16 10:59:36,437 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:36" (1/1) ... [2022-11-16 10:59:36,459 INFO L138 Inliner]: procedures = 28, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 77 [2022-11-16 10:59:36,460 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 10:59:36,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 10:59:36,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 10:59:36,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 10:59:36,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:36" (1/1) ... [2022-11-16 10:59:36,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:36" (1/1) ... [2022-11-16 10:59:36,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:36" (1/1) ... [2022-11-16 10:59:36,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:36" (1/1) ... [2022-11-16 10:59:36,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:36" (1/1) ... [2022-11-16 10:59:36,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:36" (1/1) ... [2022-11-16 10:59:36,490 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:36" (1/1) ... [2022-11-16 10:59:36,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:36" (1/1) ... [2022-11-16 10:59:36,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 10:59:36,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 10:59:36,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 10:59:36,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 10:59:36,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:36" (1/1) ... [2022-11-16 10:59:36,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:59:36,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:59:36,532 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 10:59:36,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 10:59:36,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 10:59:36,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 10:59:36,582 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-16 10:59:36,582 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-16 10:59:36,583 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-16 10:59:36,583 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-16 10:59:36,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 10:59:36,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 10:59:36,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 10:59:36,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 10:59:36,658 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 10:59:36,661 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 10:59:45,639 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 10:59:45,647 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 10:59:45,647 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 10:59:45,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:59:45 BoogieIcfgContainer [2022-11-16 10:59:45,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 10:59:45,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 10:59:45,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 10:59:45,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 10:59:45,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:59:36" (1/3) ... [2022-11-16 10:59:45,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f3245b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:59:45, skipping insertion in model container [2022-11-16 10:59:45,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:36" (2/3) ... [2022-11-16 10:59:45,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f3245b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:59:45, skipping insertion in model container [2022-11-16 10:59:45,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:59:45" (3/3) ... [2022-11-16 10:59:45,661 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_2_3.i [2022-11-16 10:59:45,684 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 10:59:45,684 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 10:59:45,738 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 10:59:45,745 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;@78359162, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 10:59:45,745 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 10:59:45,749 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 30 states have (on average 1.4) internal successors, (42), 32 states have internal predecessors, (42), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 10:59:45,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 10:59:45,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:59:45,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:59:45,759 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:59:45,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:59:45,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1780479560, now seen corresponding path program 1 times [2022-11-16 10:59:45,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:59:45,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942362764] [2022-11-16 10:59:45,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:59:45,779 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 [2022-11-16 10:59:45,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:59:45,783 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 10:59:45,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 10:59:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:45,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 10:59:45,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:59:46,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:59:46,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:59:46,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:59:46,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942362764] [2022-11-16 10:59:46,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1942362764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:59:46,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:59:46,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:59:46,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123737707] [2022-11-16 10:59:46,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:59:46,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 10:59:46,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:59:46,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 10:59:46,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 10:59:46,047 INFO L87 Difference]: Start difference. First operand has 43 states, 30 states have (on average 1.4) internal successors, (42), 32 states have internal predecessors, (42), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:59:46,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:59:46,179 INFO L93 Difference]: Finished difference Result 93 states and 127 transitions. [2022-11-16 10:59:46,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 10:59:46,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 10:59:46,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:59:46,193 INFO L225 Difference]: With dead ends: 93 [2022-11-16 10:59:46,194 INFO L226 Difference]: Without dead ends: 43 [2022-11-16 10:59:46,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 10:59:46,203 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 13 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:59:46,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 92 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 10:59:46,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-16 10:59:46,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2022-11-16 10:59:46,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 26 states have internal predecessors, (29), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 10:59:46,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2022-11-16 10:59:46,287 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 11 [2022-11-16 10:59:46,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:59:46,288 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2022-11-16 10:59:46,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:59:46,289 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2022-11-16 10:59:46,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 10:59:46,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:59:46,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:59:46,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/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)] Ended with exit code 0 [2022-11-16 10:59:46,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 10:59:46,495 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:59:46,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:59:46,496 INFO L85 PathProgramCache]: Analyzing trace with hash 413626440, now seen corresponding path program 1 times [2022-11-16 10:59:46,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:59:46,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [740544983] [2022-11-16 10:59:46,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:59:46,497 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 [2022-11-16 10:59:46,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:59:46,498 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 10:59:46,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 10:59:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:46,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 10:59:46,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:59:46,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:59:46,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:59:46,693 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:59:46,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [740544983] [2022-11-16 10:59:46,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [740544983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:59:46,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:59:46,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:59:46,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934628633] [2022-11-16 10:59:46,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:59:46,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 10:59:46,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:59:46,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 10:59:46,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 10:59:46,700 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:59:46,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:59:46,793 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2022-11-16 10:59:46,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 10:59:46,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 10:59:46,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:59:46,796 INFO L225 Difference]: With dead ends: 52 [2022-11-16 10:59:46,796 INFO L226 Difference]: Without dead ends: 38 [2022-11-16 10:59:46,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 10:59:46,798 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:59:46,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 70 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 10:59:46,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-16 10:59:46,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-16 10:59:46,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 28 states have internal predecessors, (31), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 10:59:46,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2022-11-16 10:59:46,808 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 13 [2022-11-16 10:59:46,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:59:46,809 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2022-11-16 10:59:46,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:59:46,809 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2022-11-16 10:59:46,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 10:59:46,810 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:59:46,810 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:59:46,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/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)] Ended with exit code 0 [2022-11-16 10:59:47,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 10:59:47,026 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:59:47,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:59:47,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1715037691, now seen corresponding path program 1 times [2022-11-16 10:59:47,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:59:47,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628970086] [2022-11-16 10:59:47,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:59:47,028 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 [2022-11-16 10:59:47,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:59:47,029 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 10:59:47,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 10:59:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:47,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 10:59:47,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:59:47,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:59:47,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:59:47,389 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:59:47,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628970086] [2022-11-16 10:59:47,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628970086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:59:47,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:59:47,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:59:47,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548873590] [2022-11-16 10:59:47,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:59:47,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 10:59:47,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:59:47,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 10:59:47,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 10:59:47,393 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:59:47,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:59:47,479 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2022-11-16 10:59:47,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 10:59:47,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-16 10:59:47,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:59:47,482 INFO L225 Difference]: With dead ends: 53 [2022-11-16 10:59:47,482 INFO L226 Difference]: Without dead ends: 40 [2022-11-16 10:59:47,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 10:59:47,484 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:59:47,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 10:59:47,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-16 10:59:47,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-11-16 10:59:47,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 30 states have internal predecessors, (33), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 10:59:47,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2022-11-16 10:59:47,494 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 15 [2022-11-16 10:59:47,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:59:47,495 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2022-11-16 10:59:47,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:59:47,495 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2022-11-16 10:59:47,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 10:59:47,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:59:47,497 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:59:47,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 10:59:47,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 10:59:47,714 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:59:47,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:59:47,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1030095042, now seen corresponding path program 1 times [2022-11-16 10:59:47,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:59:47,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1571849765] [2022-11-16 10:59:47,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:59:47,721 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 [2022-11-16 10:59:47,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:59:47,722 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 10:59:47,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 10:59:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:59:47,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 10:59:47,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:59:48,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:59:48,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:59:48,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:59:48,421 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:59:48,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1571849765] [2022-11-16 10:59:48,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1571849765] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:59:48,422 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:59:48,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-16 10:59:48,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287978926] [2022-11-16 10:59:48,423 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:59:48,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:59:48,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:59:48,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:59:48,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:59:48,425 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:59:48,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:59:48,694 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2022-11-16 10:59:48,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:59:48,698 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-16 10:59:48,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:59:48,699 INFO L225 Difference]: With dead ends: 57 [2022-11-16 10:59:48,700 INFO L226 Difference]: Without dead ends: 44 [2022-11-16 10:59:48,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:59:48,704 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 3 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 10:59:48,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 132 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 10:59:48,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-16 10:59:48,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-11-16 10:59:48,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 32 states have (on average 1.15625) internal successors, (37), 34 states have internal predecessors, (37), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 10:59:48,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2022-11-16 10:59:48,715 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 17 [2022-11-16 10:59:48,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:59:48,716 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2022-11-16 10:59:48,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:59:48,717 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2022-11-16 10:59:48,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 10:59:48,718 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:59:48,718 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:59:48,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 10:59:48,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 10:59:48,927 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:59:48,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:59:48,928 INFO L85 PathProgramCache]: Analyzing trace with hash -626365316, now seen corresponding path program 2 times [2022-11-16 10:59:48,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:59:48,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398385711] [2022-11-16 10:59:48,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:59:48,929 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 [2022-11-16 10:59:48,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:59:48,930 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 10:59:48,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 10:59:49,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 10:59:49,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:59:49,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 10:59:49,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:59:50,406 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 10:59:50,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:59:57,531 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 10:59:57,532 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:59:57,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398385711] [2022-11-16 10:59:57,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398385711] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:59:57,548 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:59:57,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-16 10:59:57,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371668629] [2022-11-16 10:59:57,549 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:59:57,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 10:59:57,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:59:57,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 10:59:57,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-11-16 10:59:57,553 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 18 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:00:19,582 WARN L233 SmtUtils]: Spent 6.89s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:00:40,598 WARN L233 SmtUtils]: Spent 11.42s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:00:58,795 WARN L233 SmtUtils]: Spent 10.81s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:01:02,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:01:02,684 INFO L93 Difference]: Finished difference Result 68 states and 83 transitions. [2022-11-16 11:01:02,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 11:01:02,718 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-16 11:01:02,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:01:02,720 INFO L225 Difference]: With dead ends: 68 [2022-11-16 11:01:02,720 INFO L226 Difference]: Without dead ends: 65 [2022-11-16 11:01:02,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 63.2s TimeCoverageRelationStatistics Valid=118, Invalid=531, Unknown=1, NotChecked=0, Total=650 [2022-11-16 11:01:02,722 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 33 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:01:02,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 345 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-11-16 11:01:02,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-16 11:01:02,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2022-11-16 11:01:02,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 51 states have internal predecessors, (58), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 11:01:02,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2022-11-16 11:01:02,754 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 21 [2022-11-16 11:01:02,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:01:02,755 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2022-11-16 11:01:02,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:01:02,756 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2022-11-16 11:01:02,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 11:01:02,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:01:02,758 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:01:02,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/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)] Forceful destruction successful, exit code 0 [2022-11-16 11:01:02,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:01:02,981 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:01:02,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:01:02,982 INFO L85 PathProgramCache]: Analyzing trace with hash 2101905688, now seen corresponding path program 1 times [2022-11-16 11:01:02,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:01:02,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112464540] [2022-11-16 11:01:02,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:01:02,983 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 [2022-11-16 11:01:02,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:01:02,984 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:01:02,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49d78be-a2f1-4300-81ca-cd77dc886ab2/bin/uautomizer-tPACEb0tL8/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 (7)] Waiting until timeout for monitored process