/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:46:18,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:46:18,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:46:18,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:46:18,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:46:18,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:46:18,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:46:18,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:46:18,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:46:18,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:46:18,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:46:18,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:46:18,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:46:18,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:46:18,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:46:18,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:46:18,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:46:18,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:46:18,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:46:18,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:46:18,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:46:18,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:46:18,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:46:18,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:46:18,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 01:46:18,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:46:18,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:46:18,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:46:18,214 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 01:46:18,228 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:46:18,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:46:18,233 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:46:18,234 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:46:18,235 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:46:18,235 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:46:18,235 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:46:18,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:46:18,236 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:46:18,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:46:18,236 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:46:18,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:46:18,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:46:18,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:46:18,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:46:18,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:46:18,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:46:18,237 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:46:18,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:46:18,237 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:46:18,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:46:18,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:46:18,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:46:18,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:46:18,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:46:18,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:46:18,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:46:18,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:46:18,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:46:18,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:46:18,239 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:46:18,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:46:18,239 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:46:18,239 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:46:18,239 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:46:18,239 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:46:18,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:46:18,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:46:18,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:46:18,457 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:46:18,458 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:46:18,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2023-03-31 01:46:19,461 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:46:19,775 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:46:19,776 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2023-03-31 01:46:19,800 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3900e979/4d922471d26740cc821fe07d7047ec6f/FLAG123eac373 [2023-03-31 01:46:19,814 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3900e979/4d922471d26740cc821fe07d7047ec6f [2023-03-31 01:46:19,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:46:19,818 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:46:19,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:46:19,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:46:19,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:46:19,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:46:19" (1/1) ... [2023-03-31 01:46:19,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55bd88d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:19, skipping insertion in model container [2023-03-31 01:46:19,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:46:19" (1/1) ... [2023-03-31 01:46:19,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:46:19,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:46:20,141 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[8426,8439] [2023-03-31 01:46:20,161 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12993,13006] [2023-03-31 01:46:20,191 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[20763,20776] [2023-03-31 01:46:20,231 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[27894,27907] [2023-03-31 01:46:20,291 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[49218,49231] [2023-03-31 01:46:20,361 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[80449,80462] [2023-03-31 01:46:20,560 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:46:20,578 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:46:20,606 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[8426,8439] [2023-03-31 01:46:20,616 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12993,13006] [2023-03-31 01:46:20,626 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[20763,20776] [2023-03-31 01:46:20,636 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[27894,27907] [2023-03-31 01:46:20,671 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[49218,49231] [2023-03-31 01:46:20,739 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[80449,80462] [2023-03-31 01:46:20,803 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:46:20,823 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:46:20,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:20 WrapperNode [2023-03-31 01:46:20,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:46:20,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:46:20,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:46:20,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:46:20,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:20" (1/1) ... [2023-03-31 01:46:20,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:20" (1/1) ... [2023-03-31 01:46:20,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:20" (1/1) ... [2023-03-31 01:46:20,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:20" (1/1) ... [2023-03-31 01:46:20,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:20" (1/1) ... [2023-03-31 01:46:20,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:20" (1/1) ... [2023-03-31 01:46:20,972 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:20" (1/1) ... [2023-03-31 01:46:20,984 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:20" (1/1) ... [2023-03-31 01:46:21,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:46:21,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:46:21,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:46:21,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:46:21,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:20" (1/1) ... [2023-03-31 01:46:21,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:46:21,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:46:21,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 01:46:21,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 01:46:21,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:46:21,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:46:21,058 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:46:21,058 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 01:46:21,058 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:46:21,058 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:46:21,058 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:46:21,058 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:46:21,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:46:21,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 01:46:21,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 01:46:21,059 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 01:46:21,059 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 01:46:21,059 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 01:46:21,059 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 01:46:21,059 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 01:46:21,059 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 01:46:21,059 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 01:46:21,059 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 01:46:21,059 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 01:46:21,059 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:46:21,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:46:21,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:46:21,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:46:21,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:46:21,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:46:21,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:46:21,284 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:46:21,286 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:46:23,315 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:46:23,332 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:46:23,332 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 01:46:23,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:46:23 BoogieIcfgContainer [2023-03-31 01:46:23,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:46:23,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:46:23,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:46:23,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:46:23,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:46:19" (1/3) ... [2023-03-31 01:46:23,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0e3bd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:46:23, skipping insertion in model container [2023-03-31 01:46:23,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:20" (2/3) ... [2023-03-31 01:46:23,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0e3bd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:46:23, skipping insertion in model container [2023-03-31 01:46:23,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:46:23" (3/3) ... [2023-03-31 01:46:23,345 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2023-03-31 01:46:23,357 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:46:23,358 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-03-31 01:46:23,418 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:46:23,423 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;@490da282, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:46:23,423 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-03-31 01:46:23,430 INFO L276 IsEmpty]: Start isEmpty. Operand has 1295 states, 1284 states have (on average 1.7710280373831775) internal successors, (2274), 1290 states have internal predecessors, (2274), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 01:46:23,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-03-31 01:46:23,446 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:46:23,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:46:23,447 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-03-31 01:46:23,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:46:23,450 INFO L85 PathProgramCache]: Analyzing trace with hash -2109617246, now seen corresponding path program 1 times [2023-03-31 01:46:23,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:46:23,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262646991] [2023-03-31 01:46:23,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:46:23,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:46:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:24,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:46:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:24,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:46:24,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:46:24,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262646991] [2023-03-31 01:46:24,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262646991] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:46:24,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:46:24,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:46:24,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954676627] [2023-03-31 01:46:24,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:46:24,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:46:24,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:46:24,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:46:24,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:46:24,897 INFO L87 Difference]: Start difference. First operand has 1295 states, 1284 states have (on average 1.7710280373831775) internal successors, (2274), 1290 states have internal predecessors, (2274), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:32,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:46:32,220 INFO L93 Difference]: Finished difference Result 2530 states and 4342 transitions. [2023-03-31 01:46:32,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:46:32,246 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2023-03-31 01:46:32,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:46:32,270 INFO L225 Difference]: With dead ends: 2530 [2023-03-31 01:46:32,270 INFO L226 Difference]: Without dead ends: 1602 [2023-03-31 01:46:32,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:46:32,283 INFO L413 NwaCegarLoop]: 1057 mSDtfsCounter, 7097 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 3082 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7097 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 3157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 3082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:46:32,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7097 Valid, 1574 Invalid, 3157 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [75 Valid, 3082 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-03-31 01:46:32,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2023-03-31 01:46:32,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 1596. [2023-03-31 01:46:32,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1587 states have (on average 1.307498424700693) internal successors, (2075), 1592 states have internal predecessors, (2075), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:32,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 2078 transitions. [2023-03-31 01:46:32,405 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 2078 transitions. Word has length 56 [2023-03-31 01:46:32,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:46:32,406 INFO L495 AbstractCegarLoop]: Abstraction has 1596 states and 2078 transitions. [2023-03-31 01:46:32,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:32,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 2078 transitions. [2023-03-31 01:46:32,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-03-31 01:46:32,411 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:46:32,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:46:32,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:46:32,412 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-03-31 01:46:32,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:46:32,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1481076219, now seen corresponding path program 1 times [2023-03-31 01:46:32,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:46:32,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515987352] [2023-03-31 01:46:32,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:46:32,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:46:32,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:33,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:46:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:33,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:46:33,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:46:33,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515987352] [2023-03-31 01:46:33,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515987352] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:46:33,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:46:33,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:46:33,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391614440] [2023-03-31 01:46:33,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:46:33,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:46:33,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:46:33,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:46:33,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:46:33,490 INFO L87 Difference]: Start difference. First operand 1596 states and 2078 transitions. Second operand has 6 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:38,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:46:38,350 INFO L93 Difference]: Finished difference Result 3123 states and 4128 transitions. [2023-03-31 01:46:38,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:46:38,350 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2023-03-31 01:46:38,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:46:38,357 INFO L225 Difference]: With dead ends: 3123 [2023-03-31 01:46:38,357 INFO L226 Difference]: Without dead ends: 2038 [2023-03-31 01:46:38,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:46:38,360 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 4604 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 2035 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4604 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 2071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:46:38,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4604 Valid, 958 Invalid, 2071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2035 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-03-31 01:46:38,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2038 states. [2023-03-31 01:46:38,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2038 to 2028. [2023-03-31 01:46:38,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2028 states, 2019 states have (on average 1.3194650817236255) internal successors, (2664), 2024 states have internal predecessors, (2664), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:38,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 2667 transitions. [2023-03-31 01:46:38,459 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 2667 transitions. Word has length 57 [2023-03-31 01:46:38,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:46:38,460 INFO L495 AbstractCegarLoop]: Abstraction has 2028 states and 2667 transitions. [2023-03-31 01:46:38,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:38,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 2667 transitions. [2023-03-31 01:46:38,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-03-31 01:46:38,463 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:46:38,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:46:38,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:46:38,463 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-03-31 01:46:38,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:46:38,464 INFO L85 PathProgramCache]: Analyzing trace with hash 9471875, now seen corresponding path program 1 times [2023-03-31 01:46:38,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:46:38,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479990284] [2023-03-31 01:46:38,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:46:38,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:46:38,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:39,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:46:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:39,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:46:39,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:46:39,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479990284] [2023-03-31 01:46:39,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479990284] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:46:39,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:46:39,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:46:39,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264998394] [2023-03-31 01:46:39,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:46:39,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:46:39,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:46:39,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:46:39,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:46:39,462 INFO L87 Difference]: Start difference. First operand 2028 states and 2667 transitions. Second operand has 6 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:43,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:46:43,842 INFO L93 Difference]: Finished difference Result 4423 states and 5839 transitions. [2023-03-31 01:46:43,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:46:43,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2023-03-31 01:46:43,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:46:43,851 INFO L225 Difference]: With dead ends: 4423 [2023-03-31 01:46:43,851 INFO L226 Difference]: Without dead ends: 3086 [2023-03-31 01:46:43,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:46:43,854 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 4478 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 1935 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4478 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 1966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:46:43,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4478 Valid, 980 Invalid, 1966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1935 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-03-31 01:46:43,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3086 states. [2023-03-31 01:46:43,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3086 to 3072. [2023-03-31 01:46:43,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 3063 states have (on average 1.3228860594188705) internal successors, (4052), 3068 states have internal predecessors, (4052), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:43,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 4055 transitions. [2023-03-31 01:46:43,982 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 4055 transitions. Word has length 57 [2023-03-31 01:46:43,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:46:43,983 INFO L495 AbstractCegarLoop]: Abstraction has 3072 states and 4055 transitions. [2023-03-31 01:46:43,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:43,983 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 4055 transitions. [2023-03-31 01:46:43,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-03-31 01:46:43,985 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:46:43,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:46:43,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:46:43,986 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-03-31 01:46:43,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:46:43,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1495817125, now seen corresponding path program 1 times [2023-03-31 01:46:43,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:46:43,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244228293] [2023-03-31 01:46:43,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:46:43,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:46:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:45,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:46:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:45,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:46:45,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:46:45,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244228293] [2023-03-31 01:46:45,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244228293] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:46:45,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:46:45,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-03-31 01:46:45,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56201115] [2023-03-31 01:46:45,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:46:45,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:46:45,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:46:45,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:46:45,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:46:45,180 INFO L87 Difference]: Start difference. First operand 3072 states and 4055 transitions. Second operand has 9 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:50,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:46:50,662 INFO L93 Difference]: Finished difference Result 5209 states and 7157 transitions. [2023-03-31 01:46:50,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-31 01:46:50,662 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2023-03-31 01:46:50,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:46:50,676 INFO L225 Difference]: With dead ends: 5209 [2023-03-31 01:46:50,676 INFO L226 Difference]: Without dead ends: 4505 [2023-03-31 01:46:50,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2023-03-31 01:46:50,684 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 3394 mSDsluCounter, 1560 mSDsCounter, 0 mSdLazyCounter, 3123 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3394 SdHoareTripleChecker+Valid, 2229 SdHoareTripleChecker+Invalid, 3139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:46:50,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3394 Valid, 2229 Invalid, 3139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 3123 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-03-31 01:46:50,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4505 states. [2023-03-31 01:46:50,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4505 to 3072. [2023-03-31 01:46:50,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 3063 states have (on average 1.3225595821090435) internal successors, (4051), 3068 states have internal predecessors, (4051), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:50,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 4054 transitions. [2023-03-31 01:46:50,846 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 4054 transitions. Word has length 59 [2023-03-31 01:46:50,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:46:50,847 INFO L495 AbstractCegarLoop]: Abstraction has 3072 states and 4054 transitions. [2023-03-31 01:46:50,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:50,847 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 4054 transitions. [2023-03-31 01:46:50,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-03-31 01:46:50,850 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:46:50,850 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:46:50,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:46:50,850 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-03-31 01:46:50,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:46:50,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1191753371, now seen corresponding path program 1 times [2023-03-31 01:46:50,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:46:50,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927427084] [2023-03-31 01:46:50,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:46:50,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:46:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:52,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:46:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:52,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:46:52,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:46:52,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927427084] [2023-03-31 01:46:52,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927427084] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:46:52,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:46:52,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:46:52,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304632554] [2023-03-31 01:46:52,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:46:52,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:46:52,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:46:52,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:46:52,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:46:52,126 INFO L87 Difference]: Start difference. First operand 3072 states and 4054 transitions. Second operand has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:57,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:46:57,886 INFO L93 Difference]: Finished difference Result 4621 states and 6244 transitions. [2023-03-31 01:46:57,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-03-31 01:46:57,887 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2023-03-31 01:46:57,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:46:57,898 INFO L225 Difference]: With dead ends: 4621 [2023-03-31 01:46:57,898 INFO L226 Difference]: Without dead ends: 4615 [2023-03-31 01:46:57,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-03-31 01:46:57,900 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 6651 mSDsluCounter, 2201 mSDsCounter, 0 mSdLazyCounter, 3821 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6651 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 3866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 3821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:46:57,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6651 Valid, 2864 Invalid, 3866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 3821 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-03-31 01:46:57,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4615 states. [2023-03-31 01:46:58,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4615 to 3072. [2023-03-31 01:46:58,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 3063 states have (on average 1.3222331047992164) internal successors, (4050), 3068 states have internal predecessors, (4050), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:58,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 4053 transitions. [2023-03-31 01:46:58,096 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 4053 transitions. Word has length 59 [2023-03-31 01:46:58,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:46:58,097 INFO L495 AbstractCegarLoop]: Abstraction has 3072 states and 4053 transitions. [2023-03-31 01:46:58,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:58,097 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 4053 transitions. [2023-03-31 01:46:58,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-03-31 01:46:58,099 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:46:58,099 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:46:58,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:46:58,100 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-03-31 01:46:58,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:46:58,100 INFO L85 PathProgramCache]: Analyzing trace with hash 2106213882, now seen corresponding path program 1 times [2023-03-31 01:46:58,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:46:58,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348389304] [2023-03-31 01:46:58,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:46:58,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:46:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:59,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:46:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:59,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:46:59,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:46:59,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348389304] [2023-03-31 01:46:59,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348389304] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:46:59,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:46:59,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:46:59,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24106270] [2023-03-31 01:46:59,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:46:59,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:46:59,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:46:59,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:46:59,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:46:59,261 INFO L87 Difference]: Start difference. First operand 3072 states and 4053 transitions. Second operand has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:05,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:05,280 INFO L93 Difference]: Finished difference Result 5855 states and 8055 transitions. [2023-03-31 01:47:05,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-03-31 01:47:05,281 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2023-03-31 01:47:05,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:05,296 INFO L225 Difference]: With dead ends: 5855 [2023-03-31 01:47:05,296 INFO L226 Difference]: Without dead ends: 5285 [2023-03-31 01:47:05,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-03-31 01:47:05,299 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 5290 mSDsluCounter, 2198 mSDsCounter, 0 mSdLazyCounter, 4320 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5290 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 4403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 4320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:05,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5290 Valid, 2872 Invalid, 4403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 4320 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-03-31 01:47:05,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5285 states. [2023-03-31 01:47:05,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5285 to 3072. [2023-03-31 01:47:05,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 3063 states have (on average 1.3219066274893896) internal successors, (4049), 3068 states have internal predecessors, (4049), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:05,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 4052 transitions. [2023-03-31 01:47:05,543 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 4052 transitions. Word has length 59 [2023-03-31 01:47:05,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:05,543 INFO L495 AbstractCegarLoop]: Abstraction has 3072 states and 4052 transitions. [2023-03-31 01:47:05,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:05,543 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 4052 transitions. [2023-03-31 01:47:05,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-03-31 01:47:05,546 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:05,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:47:05,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:47:05,546 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-03-31 01:47:05,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:05,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1735868852, now seen corresponding path program 1 times [2023-03-31 01:47:05,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:05,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847192011] [2023-03-31 01:47:05,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:05,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:06,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:06,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:47:06,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:06,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847192011] [2023-03-31 01:47:06,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847192011] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:06,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:06,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:47:06,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163287101] [2023-03-31 01:47:06,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:06,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:47:06,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:06,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:47:06,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:06,460 INFO L87 Difference]: Start difference. First operand 3072 states and 4052 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:10,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:10,520 INFO L93 Difference]: Finished difference Result 4002 states and 5475 transitions. [2023-03-31 01:47:10,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:47:10,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2023-03-31 01:47:10,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:10,528 INFO L225 Difference]: With dead ends: 4002 [2023-03-31 01:47:10,528 INFO L226 Difference]: Without dead ends: 3102 [2023-03-31 01:47:10,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:10,531 INFO L413 NwaCegarLoop]: 1198 mSDtfsCounter, 598 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:10,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 1799 Invalid, 1254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-03-31 01:47:10,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3102 states. [2023-03-31 01:47:10,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3102 to 3100. [2023-03-31 01:47:10,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 3091 states have (on average 1.346489809123261) internal successors, (4162), 3096 states have internal predecessors, (4162), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:10,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 4165 transitions. [2023-03-31 01:47:10,787 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 4165 transitions. Word has length 60 [2023-03-31 01:47:10,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:10,787 INFO L495 AbstractCegarLoop]: Abstraction has 3100 states and 4165 transitions. [2023-03-31 01:47:10,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:10,787 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 4165 transitions. [2023-03-31 01:47:10,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-03-31 01:47:10,790 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:10,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:47:10,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:47:10,790 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-03-31 01:47:10,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:10,790 INFO L85 PathProgramCache]: Analyzing trace with hash 528167772, now seen corresponding path program 1 times [2023-03-31 01:47:10,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:10,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066291762] [2023-03-31 01:47:10,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:10,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:11,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:11,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:47:11,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:11,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066291762] [2023-03-31 01:47:11,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066291762] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:11,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:11,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:47:11,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325841387] [2023-03-31 01:47:11,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:11,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:47:11,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:11,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:47:11,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:11,771 INFO L87 Difference]: Start difference. First operand 3100 states and 4165 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:15,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:15,471 INFO L93 Difference]: Finished difference Result 4796 states and 6722 transitions. [2023-03-31 01:47:15,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:47:15,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2023-03-31 01:47:15,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:15,481 INFO L225 Difference]: With dead ends: 4796 [2023-03-31 01:47:15,481 INFO L226 Difference]: Without dead ends: 3519 [2023-03-31 01:47:15,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:15,484 INFO L413 NwaCegarLoop]: 1171 mSDtfsCounter, 576 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:15,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 1778 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-03-31 01:47:15,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3519 states. [2023-03-31 01:47:15,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3519 to 3517. [2023-03-31 01:47:15,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3517 states, 3508 states have (on average 1.3694412770809579) internal successors, (4804), 3513 states have internal predecessors, (4804), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:15,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3517 states to 3517 states and 4807 transitions. [2023-03-31 01:47:15,803 INFO L78 Accepts]: Start accepts. Automaton has 3517 states and 4807 transitions. Word has length 60 [2023-03-31 01:47:15,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:15,803 INFO L495 AbstractCegarLoop]: Abstraction has 3517 states and 4807 transitions. [2023-03-31 01:47:15,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:15,803 INFO L276 IsEmpty]: Start isEmpty. Operand 3517 states and 4807 transitions. [2023-03-31 01:47:15,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-03-31 01:47:15,806 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:15,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:47:15,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 01:47:15,806 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-03-31 01:47:15,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:15,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1938351468, now seen corresponding path program 1 times [2023-03-31 01:47:15,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:15,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801854753] [2023-03-31 01:47:15,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:15,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:16,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:16,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:16,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:47:16,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:16,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801854753] [2023-03-31 01:47:16,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801854753] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:16,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:16,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:47:16,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833980056] [2023-03-31 01:47:16,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:16,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:47:16,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:16,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:47:16,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:16,707 INFO L87 Difference]: Start difference. First operand 3517 states and 4807 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)