/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 18:06:04,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 18:06:04,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 18:06:05,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 18:06:05,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 18:06:05,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 18:06:05,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 18:06:05,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 18:06:05,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 18:06:05,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 18:06:05,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 18:06:05,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 18:06:05,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 18:06:05,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 18:06:05,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 18:06:05,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 18:06:05,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 18:06:05,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 18:06:05,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 18:06:05,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 18:06:05,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 18:06:05,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 18:06:05,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 18:06:05,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 18:06:05,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 18:06:05,101 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 18:06:05,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 18:06:05,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 18:06:05,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 18:06:05,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 18:06:05,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 18:06:05,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 18:06:05,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 18:06:05,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 18:06:05,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 18:06:05,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 18:06:05,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 18:06:05,115 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 18:06:05,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 18:06:05,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 18:06:05,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 18:06:05,124 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 18:06:05,186 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 18:06:05,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 18:06:05,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 18:06:05,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 18:06:05,193 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 18:06:05,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 18:06:05,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 18:06:05,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 18:06:05,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 18:06:05,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 18:06:05,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 18:06:05,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 18:06:05,196 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 18:06:05,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 18:06:05,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 18:06:05,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 18:06:05,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 18:06:05,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 18:06:05,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 18:06:05,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 18:06:05,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 18:06:05,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 18:06:05,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 18:06:05,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 18:06:05,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 18:06:05,200 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:/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 18:06:05,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 18:06:05,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 18:06:05,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 18:06:05,698 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 18:06:05,699 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 18:06:05,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2020-12-22 18:06:05,804 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4506beae8/f927710441b24551982e29a88015886e/FLAG941addce3 [2020-12-22 18:06:06,713 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 18:06:06,716 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2020-12-22 18:06:06,755 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4506beae8/f927710441b24551982e29a88015886e/FLAG941addce3 [2020-12-22 18:06:06,796 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4506beae8/f927710441b24551982e29a88015886e [2020-12-22 18:06:06,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 18:06:06,807 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 18:06:06,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 18:06:06,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 18:06:06,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 18:06:06,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:06:06" (1/1) ... [2020-12-22 18:06:06,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4acd9010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:06, skipping insertion in model container [2020-12-22 18:06:06,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:06:06" (1/1) ... [2020-12-22 18:06:06,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 18:06:06,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 18:06:08,030 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44118,44131] [2020-12-22 18:06:08,070 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44660,44673] [2020-12-22 18:06:08,277 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56247,56260] [2020-12-22 18:06:08,279 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56368,56381] [2020-12-22 18:06:08,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 18:06:08,317 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 18:06:08,387 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44118,44131] [2020-12-22 18:06:08,390 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44660,44673] [2020-12-22 18:06:08,498 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56247,56260] [2020-12-22 18:06:08,501 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56368,56381] [2020-12-22 18:06:08,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 18:06:08,703 INFO L208 MainTranslator]: Completed translation [2020-12-22 18:06:08,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:08 WrapperNode [2020-12-22 18:06:08,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 18:06:08,707 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 18:06:08,707 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 18:06:08,707 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 18:06:08,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:08" (1/1) ... [2020-12-22 18:06:08,807 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:08" (1/1) ... [2020-12-22 18:06:08,891 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 18:06:08,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 18:06:08,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 18:06:08,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 18:06:08,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:08" (1/1) ... [2020-12-22 18:06:08,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:08" (1/1) ... [2020-12-22 18:06:08,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:08" (1/1) ... [2020-12-22 18:06:08,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:08" (1/1) ... [2020-12-22 18:06:09,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:08" (1/1) ... [2020-12-22 18:06:09,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:08" (1/1) ... [2020-12-22 18:06:09,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:08" (1/1) ... [2020-12-22 18:06:09,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 18:06:09,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 18:06:09,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 18:06:09,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 18:06:09,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 18:06:09,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 18:06:09,182 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-12-22 18:06:09,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 18:06:09,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 18:06:09,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 18:06:09,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 18:06:09,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 18:06:09,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 18:06:09,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 18:06:09,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 18:06:09,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 18:06:11,078 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 18:06:11,079 INFO L299 CfgBuilder]: Removed 111 assume(true) statements. [2020-12-22 18:06:11,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:06:11 BoogieIcfgContainer [2020-12-22 18:06:11,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 18:06:11,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 18:06:11,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 18:06:11,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 18:06:11,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:06:06" (1/3) ... [2020-12-22 18:06:11,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5c9966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:06:11, skipping insertion in model container [2020-12-22 18:06:11,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:08" (2/3) ... [2020-12-22 18:06:11,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5c9966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:06:11, skipping insertion in model container [2020-12-22 18:06:11,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:06:11" (3/3) ... [2020-12-22 18:06:11,093 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test6-1.i [2020-12-22 18:06:11,101 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 18:06:11,108 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-12-22 18:06:11,132 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-12-22 18:06:11,166 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 18:06:11,166 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 18:06:11,166 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 18:06:11,166 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 18:06:11,166 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 18:06:11,167 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 18:06:11,167 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 18:06:11,167 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 18:06:11,202 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2020-12-22 18:06:11,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 18:06:11,209 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:06:11,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:06:11,211 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:06:11,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:06:11,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1030621672, now seen corresponding path program 1 times [2020-12-22 18:06:11,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:06:11,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379553273] [2020-12-22 18:06:11,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:06:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:06:11,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:06:11,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379553273] [2020-12-22 18:06:11,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:06:11,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 18:06:11,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089514971] [2020-12-22 18:06:11,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 18:06:11,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:06:11,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 18:06:11,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 18:06:11,453 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 2 states. [2020-12-22 18:06:11,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:06:11,506 INFO L93 Difference]: Finished difference Result 466 states and 739 transitions. [2020-12-22 18:06:11,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 18:06:11,508 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-22 18:06:11,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:06:11,524 INFO L225 Difference]: With dead ends: 466 [2020-12-22 18:06:11,524 INFO L226 Difference]: Without dead ends: 227 [2020-12-22 18:06:11,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 18:06:11,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-12-22 18:06:11,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2020-12-22 18:06:11,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-12-22 18:06:11,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 285 transitions. [2020-12-22 18:06:11,599 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 285 transitions. Word has length 8 [2020-12-22 18:06:11,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:06:11,601 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 285 transitions. [2020-12-22 18:06:11,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 18:06:11,603 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 285 transitions. [2020-12-22 18:06:11,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 18:06:11,604 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:06:11,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:06:11,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 18:06:11,605 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:06:11,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:06:11,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1260005844, now seen corresponding path program 1 times [2020-12-22 18:06:11,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:06:11,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153880429] [2020-12-22 18:06:11,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:06:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:06:11,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:06:11,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153880429] [2020-12-22 18:06:11,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:06:11,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:06:11,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442451720] [2020-12-22 18:06:11,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:06:11,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:06:11,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:06:11,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:06:11,798 INFO L87 Difference]: Start difference. First operand 227 states and 285 transitions. Second operand 4 states. [2020-12-22 18:06:12,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:06:12,402 INFO L93 Difference]: Finished difference Result 479 states and 601 transitions. [2020-12-22 18:06:12,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:06:12,403 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-22 18:06:12,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:06:12,407 INFO L225 Difference]: With dead ends: 479 [2020-12-22 18:06:12,407 INFO L226 Difference]: Without dead ends: 369 [2020-12-22 18:06:12,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:06:12,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-12-22 18:06:12,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 229. [2020-12-22 18:06:12,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-12-22 18:06:12,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 287 transitions. [2020-12-22 18:06:12,432 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 287 transitions. Word has length 10 [2020-12-22 18:06:12,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:06:12,432 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 287 transitions. [2020-12-22 18:06:12,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:06:12,433 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 287 transitions. [2020-12-22 18:06:12,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 18:06:12,434 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:06:12,435 INFO L422 BasicCegarLoop]: 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] [2020-12-22 18:06:12,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 18:06:12,435 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:06:12,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:06:12,436 INFO L82 PathProgramCache]: Analyzing trace with hash -602340381, now seen corresponding path program 1 times [2020-12-22 18:06:12,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:06:12,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635037559] [2020-12-22 18:06:12,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:06:12,468 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:06:12,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [77275881] [2020-12-22 18:06:12,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:06:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:06:12,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:06:12,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:06:12,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:06:12,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635037559] [2020-12-22 18:06:12,820 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:06:12,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77275881] [2020-12-22 18:06:12,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:06:12,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:06:12,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987071814] [2020-12-22 18:06:12,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:06:12,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:06:12,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:06:12,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:06:12,835 INFO L87 Difference]: Start difference. First operand 229 states and 287 transitions. Second operand 3 states. [2020-12-22 18:06:12,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:06:12,950 INFO L93 Difference]: Finished difference Result 475 states and 601 transitions. [2020-12-22 18:06:12,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:06:12,951 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-22 18:06:12,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:06:12,953 INFO L225 Difference]: With dead ends: 475 [2020-12-22 18:06:12,953 INFO L226 Difference]: Without dead ends: 250 [2020-12-22 18:06:12,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:06:12,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-12-22 18:06:12,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 249. [2020-12-22 18:06:12,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-12-22 18:06:12,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 307 transitions. [2020-12-22 18:06:12,996 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 307 transitions. Word has length 44 [2020-12-22 18:06:12,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:06:12,997 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 307 transitions. [2020-12-22 18:06:12,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:06:12,997 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 307 transitions. [2020-12-22 18:06:12,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 18:06:13,000 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:06:13,000 INFO L422 BasicCegarLoop]: 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] [2020-12-22 18:06:13,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 18:06:13,217 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:06:13,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:06:13,218 INFO L82 PathProgramCache]: Analyzing trace with hash -821195099, now seen corresponding path program 1 times [2020-12-22 18:06:13,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:06:13,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958340061] [2020-12-22 18:06:13,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:06:13,258 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:06:13,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [941048768] [2020-12-22 18:06:13,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:06:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:06:13,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:06:13,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:06:13,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:06:13,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958340061] [2020-12-22 18:06:13,568 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:06:13,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941048768] [2020-12-22 18:06:13,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:06:13,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:06:13,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998433642] [2020-12-22 18:06:13,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:06:13,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:06:13,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:06:13,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:06:13,572 INFO L87 Difference]: Start difference. First operand 249 states and 307 transitions. Second operand 4 states. [2020-12-22 18:06:13,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:06:13,719 INFO L93 Difference]: Finished difference Result 487 states and 603 transitions. [2020-12-22 18:06:13,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:06:13,720 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-12-22 18:06:13,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:06:13,723 INFO L225 Difference]: With dead ends: 487 [2020-12-22 18:06:13,723 INFO L226 Difference]: Without dead ends: 242 [2020-12-22 18:06:13,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:06:13,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-12-22 18:06:13,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 235. [2020-12-22 18:06:13,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-12-22 18:06:13,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 286 transitions. [2020-12-22 18:06:13,742 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 286 transitions. Word has length 44 [2020-12-22 18:06:13,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:06:13,742 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 286 transitions. [2020-12-22 18:06:13,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:06:13,742 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 286 transitions. [2020-12-22 18:06:13,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 18:06:13,746 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:06:13,746 INFO L422 BasicCegarLoop]: 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] [2020-12-22 18:06:13,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:06:13,962 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:06:13,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:06:13,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1704043945, now seen corresponding path program 1 times [2020-12-22 18:06:13,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:06:13,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28076713] [2020-12-22 18:06:13,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:06:14,014 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:06:14,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [733834357] [2020-12-22 18:06:14,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:06:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:06:14,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 18:06:14,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:06:14,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:06:14,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28076713] [2020-12-22 18:06:14,323 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:06:14,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733834357] [2020-12-22 18:06:14,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:06:14,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 18:06:14,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424832223] [2020-12-22 18:06:14,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 18:06:14,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:06:14,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 18:06:14,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 18:06:14,326 INFO L87 Difference]: Start difference. First operand 235 states and 286 transitions. Second operand 6 states. [2020-12-22 18:06:15,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:06:15,232 INFO L93 Difference]: Finished difference Result 447 states and 550 transitions. [2020-12-22 18:06:15,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 18:06:15,232 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-12-22 18:06:15,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:06:15,235 INFO L225 Difference]: With dead ends: 447 [2020-12-22 18:06:15,236 INFO L226 Difference]: Without dead ends: 445 [2020-12-22 18:06:15,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 18:06:15,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-12-22 18:06:15,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 233. [2020-12-22 18:06:15,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-12-22 18:06:15,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 284 transitions. [2020-12-22 18:06:15,265 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 284 transitions. Word has length 44 [2020-12-22 18:06:15,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:06:15,266 INFO L481 AbstractCegarLoop]: Abstraction has 233 states and 284 transitions. [2020-12-22 18:06:15,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 18:06:15,266 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 284 transitions. [2020-12-22 18:06:15,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 18:06:15,278 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:06:15,278 INFO L422 BasicCegarLoop]: 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] [2020-12-22 18:06:15,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:06:15,496 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:06:15,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:06:15,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1088553020, now seen corresponding path program 1 times [2020-12-22 18:06:15,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:06:15,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992590615] [2020-12-22 18:06:15,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:06:15,519 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:06:15,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1047952449] [2020-12-22 18:06:15,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:06:15,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:06:15,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 18:06:15,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:06:15,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:06:15,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992590615] [2020-12-22 18:06:15,809 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:06:15,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047952449] [2020-12-22 18:06:15,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:06:15,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:06:15,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537737123] [2020-12-22 18:06:15,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 18:06:15,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:06:15,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 18:06:15,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:06:15,818 INFO L87 Difference]: Start difference. First operand 233 states and 284 transitions. Second operand 5 states. [2020-12-22 18:06:15,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:06:15,972 INFO L93 Difference]: Finished difference Result 940 states and 1155 transitions. [2020-12-22 18:06:15,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 18:06:15,973 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-12-22 18:06:15,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:06:15,978 INFO L225 Difference]: With dead ends: 940 [2020-12-22 18:06:15,978 INFO L226 Difference]: Without dead ends: 711 [2020-12-22 18:06:15,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:06:15,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-12-22 18:06:15,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 325. [2020-12-22 18:06:15,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2020-12-22 18:06:15,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 395 transitions. [2020-12-22 18:06:16,000 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 395 transitions. Word has length 51 [2020-12-22 18:06:16,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:06:16,000 INFO L481 AbstractCegarLoop]: Abstraction has 325 states and 395 transitions. [2020-12-22 18:06:16,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 18:06:16,001 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 395 transitions. [2020-12-22 18:06:16,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 18:06:16,001 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:06:16,002 INFO L422 BasicCegarLoop]: 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] [2020-12-22 18:06:16,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:06:16,217 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:06:16,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:06:16,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1193587178, now seen corresponding path program 1 times [2020-12-22 18:06:16,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:06:16,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992825513] [2020-12-22 18:06:16,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:06:16,275 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:06:16,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [407714694] [2020-12-22 18:06:16,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:06:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:06:16,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 18:06:16,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:06:16,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:06:16,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992825513] [2020-12-22 18:06:16,645 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:06:16,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407714694] [2020-12-22 18:06:16,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:06:16,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:06:16,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040131337] [2020-12-22 18:06:16,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:06:16,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:06:16,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:06:16,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:06:16,648 INFO L87 Difference]: Start difference. First operand 325 states and 395 transitions. Second operand 3 states. [2020-12-22 18:06:16,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:06:16,770 INFO L93 Difference]: Finished difference Result 686 states and 832 transitions. [2020-12-22 18:06:16,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:06:16,771 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-22 18:06:16,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:06:16,773 INFO L225 Difference]: With dead ends: 686 [2020-12-22 18:06:16,773 INFO L226 Difference]: Without dead ends: 365 [2020-12-22 18:06:16,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:06:16,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-12-22 18:06:16,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 336. [2020-12-22 18:06:16,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-12-22 18:06:16,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 412 transitions. [2020-12-22 18:06:16,791 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 412 transitions. Word has length 54 [2020-12-22 18:06:16,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:06:16,792 INFO L481 AbstractCegarLoop]: Abstraction has 336 states and 412 transitions. [2020-12-22 18:06:16,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:06:16,792 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 412 transitions. [2020-12-22 18:06:16,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 18:06:16,793 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:06:16,793 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:06:17,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 18:06:17,007 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:06:17,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:06:17,008 INFO L82 PathProgramCache]: Analyzing trace with hash 901612414, now seen corresponding path program 1 times [2020-12-22 18:06:17,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:06:17,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826358632] [2020-12-22 18:06:17,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:06:17,028 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:06:17,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [103466173] [2020-12-22 18:06:17,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:06:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:06:17,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 18:06:17,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:06:17,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:06:17,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826358632] [2020-12-22 18:06:17,293 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:06:17,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103466173] [2020-12-22 18:06:17,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:06:17,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:06:17,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573915465] [2020-12-22 18:06:17,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:06:17,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:06:17,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:06:17,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:06:17,295 INFO L87 Difference]: Start difference. First operand 336 states and 412 transitions. Second operand 4 states. [2020-12-22 18:06:17,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:06:17,484 INFO L93 Difference]: Finished difference Result 626 states and 773 transitions. [2020-12-22 18:06:17,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:06:17,485 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-12-22 18:06:17,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:06:17,488 INFO L225 Difference]: With dead ends: 626 [2020-12-22 18:06:17,488 INFO L226 Difference]: Without dead ends: 342 [2020-12-22 18:06:17,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:06:17,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-12-22 18:06:17,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 336. [2020-12-22 18:06:17,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-12-22 18:06:17,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 411 transitions. [2020-12-22 18:06:17,508 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 411 transitions. Word has length 78 [2020-12-22 18:06:17,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:06:17,508 INFO L481 AbstractCegarLoop]: Abstraction has 336 states and 411 transitions. [2020-12-22 18:06:17,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:06:17,509 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 411 transitions. [2020-12-22 18:06:17,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 18:06:17,510 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:06:17,510 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:06:17,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:06:17,724 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:06:17,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:06:17,725 INFO L82 PathProgramCache]: Analyzing trace with hash -611683268, now seen corresponding path program 1 times [2020-12-22 18:06:17,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:06:17,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279841828] [2020-12-22 18:06:17,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:06:17,745 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:06:17,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [787811124] [2020-12-22 18:06:17,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:06:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:06:17,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:06:17,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:06:18,091 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 18:06:18,094 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:06:18,097 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:06:18,098 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:06:18,098 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-12-22 18:06:18,119 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-22 18:06:18,120 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:06:18,122 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:06:18,123 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:06:18,123 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-22 18:06:18,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 18:06:18,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279841828] [2020-12-22 18:06:18,137 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:06:18,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787811124] [2020-12-22 18:06:18,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:06:18,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:06:18,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806204006] [2020-12-22 18:06:18,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:06:18,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:06:18,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:06:18,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:06:18,139 INFO L87 Difference]: Start difference. First operand 336 states and 411 transitions. Second operand 4 states. [2020-12-22 18:06:18,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:06:18,607 INFO L93 Difference]: Finished difference Result 447 states and 551 transitions. [2020-12-22 18:06:18,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:06:18,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-12-22 18:06:18,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:06:18,611 INFO L225 Difference]: With dead ends: 447 [2020-12-22 18:06:18,611 INFO L226 Difference]: Without dead ends: 431 [2020-12-22 18:06:18,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:06:18,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-12-22 18:06:18,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 338. [2020-12-22 18:06:18,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-12-22 18:06:18,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 413 transitions. [2020-12-22 18:06:18,628 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 413 transitions. Word has length 79 [2020-12-22 18:06:18,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:06:18,629 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 413 transitions. [2020-12-22 18:06:18,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:06:18,629 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 413 transitions. [2020-12-22 18:06:18,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 18:06:18,630 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:06:18,630 INFO L422 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:06:18,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:06:18,844 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:06:18,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:06:18,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1201768388, now seen corresponding path program 1 times [2020-12-22 18:06:18,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:06:18,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861184855] [2020-12-22 18:06:18,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:06:18,863 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:06:18,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [187788447] [2020-12-22 18:06:18,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:06:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:06:19,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 18:06:19,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:06:19,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:06:19,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861184855] [2020-12-22 18:06:19,268 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:06:19,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187788447] [2020-12-22 18:06:19,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:06:19,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 18:06:19,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30206956] [2020-12-22 18:06:19,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 18:06:19,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:06:19,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 18:06:19,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:06:19,270 INFO L87 Difference]: Start difference. First operand 338 states and 413 transitions. Second operand 5 states. [2020-12-22 18:06:19,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:06:19,395 INFO L93 Difference]: Finished difference Result 626 states and 773 transitions. [2020-12-22 18:06:19,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 18:06:19,395 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-12-22 18:06:19,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:06:19,398 INFO L225 Difference]: With dead ends: 626 [2020-12-22 18:06:19,398 INFO L226 Difference]: Without dead ends: 340 [2020-12-22 18:06:19,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 18:06:19,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-12-22 18:06:19,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2020-12-22 18:06:19,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-12-22 18:06:19,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 415 transitions. [2020-12-22 18:06:19,414 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 415 transitions. Word has length 81 [2020-12-22 18:06:19,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:06:19,414 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 415 transitions. [2020-12-22 18:06:19,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 18:06:19,414 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 415 transitions. [2020-12-22 18:06:19,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 18:06:19,415 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:06:19,415 INFO L422 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:06:19,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 18:06:19,629 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:06:19,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:06:19,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1914773501, now seen corresponding path program 1 times [2020-12-22 18:06:19,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:06:19,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828454610] [2020-12-22 18:06:19,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:06:19,648 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:06:19,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1603689315] [2020-12-22 18:06:19,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:06:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:06:19,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 18:06:19,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:06:20,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 18:06:20,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828454610] [2020-12-22 18:06:20,094 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:06:20,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603689315] [2020-12-22 18:06:20,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:06:20,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 18:06:20,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060732246] [2020-12-22 18:06:20,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 18:06:20,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:06:20,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 18:06:20,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 18:06:20,097 INFO L87 Difference]: Start difference. First operand 340 states and 415 transitions. Second operand 6 states. [2020-12-22 18:06:20,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:06:20,255 INFO L93 Difference]: Finished difference Result 630 states and 777 transitions. [2020-12-22 18:06:20,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 18:06:20,255 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-12-22 18:06:20,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:06:20,258 INFO L225 Difference]: With dead ends: 630 [2020-12-22 18:06:20,258 INFO L226 Difference]: Without dead ends: 342 [2020-12-22 18:06:20,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-12-22 18:06:20,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-12-22 18:06:20,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2020-12-22 18:06:20,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-12-22 18:06:20,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 417 transitions. [2020-12-22 18:06:20,275 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 417 transitions. Word has length 83 [2020-12-22 18:06:20,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:06:20,275 INFO L481 AbstractCegarLoop]: Abstraction has 342 states and 417 transitions. [2020-12-22 18:06:20,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 18:06:20,275 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 417 transitions. [2020-12-22 18:06:20,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 18:06:20,276 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:06:20,276 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:06:20,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:06:20,490 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:06:20,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:06:20,491 INFO L82 PathProgramCache]: Analyzing trace with hash 931638948, now seen corresponding path program 2 times [2020-12-22 18:06:20,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:06:20,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761136181] [2020-12-22 18:06:20,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:06:20,508 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:06:20,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [199542883] [2020-12-22 18:06:20,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:07:13,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:07:13,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:07:13,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-22 18:07:13,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:07:13,674 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 18:07:13,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761136181] [2020-12-22 18:07:13,675 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:07:13,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199542883] [2020-12-22 18:07:13,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:07:13,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 18:07:13,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850549577] [2020-12-22 18:07:13,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 18:07:13,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:07:13,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 18:07:13,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 18:07:13,679 INFO L87 Difference]: Start difference. First operand 342 states and 417 transitions. Second operand 7 states. [2020-12-22 18:07:13,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:07:13,919 INFO L93 Difference]: Finished difference Result 634 states and 781 transitions. [2020-12-22 18:07:13,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 18:07:13,920 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 85 [2020-12-22 18:07:13,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:07:13,922 INFO L225 Difference]: With dead ends: 634 [2020-12-22 18:07:13,922 INFO L226 Difference]: Without dead ends: 344 [2020-12-22 18:07:13,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2020-12-22 18:07:13,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-12-22 18:07:13,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2020-12-22 18:07:13,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-12-22 18:07:13,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 419 transitions. [2020-12-22 18:07:13,941 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 419 transitions. Word has length 85 [2020-12-22 18:07:13,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:07:13,942 INFO L481 AbstractCegarLoop]: Abstraction has 344 states and 419 transitions. [2020-12-22 18:07:13,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 18:07:13,942 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 419 transitions. [2020-12-22 18:07:13,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 18:07:13,943 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:07:13,943 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:07:14,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:07:14,157 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:07:14,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:07:14,158 INFO L82 PathProgramCache]: Analyzing trace with hash -924314845, now seen corresponding path program 3 times [2020-12-22 18:07:14,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:07:14,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382254036] [2020-12-22 18:07:14,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:07:14,189 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:07:14,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560937077] [2020-12-22 18:07:14,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:09:46,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 18:09:46,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:09:46,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 18:09:46,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:09:46,379 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 18:09:46,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382254036] [2020-12-22 18:09:46,379 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:09:46,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560937077] [2020-12-22 18:09:46,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:09:46,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 18:09:46,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658246276] [2020-12-22 18:09:46,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 18:09:46,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:09:46,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 18:09:46,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 18:09:46,381 INFO L87 Difference]: Start difference. First operand 344 states and 419 transitions. Second operand 6 states. [2020-12-22 18:09:46,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:09:46,446 INFO L93 Difference]: Finished difference Result 637 states and 783 transitions. [2020-12-22 18:09:46,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 18:09:46,446 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-12-22 18:09:46,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:09:46,448 INFO L225 Difference]: With dead ends: 637 [2020-12-22 18:09:46,449 INFO L226 Difference]: Without dead ends: 345 [2020-12-22 18:09:46,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 18:09:46,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-12-22 18:09:46,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2020-12-22 18:09:46,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-12-22 18:09:46,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 420 transitions. [2020-12-22 18:09:46,466 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 420 transitions. Word has length 87 [2020-12-22 18:09:46,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:09:46,466 INFO L481 AbstractCegarLoop]: Abstraction has 345 states and 420 transitions. [2020-12-22 18:09:46,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 18:09:46,466 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 420 transitions. [2020-12-22 18:09:46,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 18:09:46,467 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:09:46,468 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:09:46,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 18:09:46,682 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:09:46,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:09:46,683 INFO L82 PathProgramCache]: Analyzing trace with hash 470397120, now seen corresponding path program 4 times [2020-12-22 18:09:46,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:09:46,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290405049] [2020-12-22 18:09:46,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:09:46,710 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:09:46,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [299482116] [2020-12-22 18:09:46,710 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:09:47,033 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 18:09:47,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:09:47,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 18:09:47,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:09:47,184 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 18:09:47,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290405049] [2020-12-22 18:09:47,185 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:09:47,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299482116] [2020-12-22 18:09:47,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:09:47,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 18:09:47,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500672100] [2020-12-22 18:09:47,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 18:09:47,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:09:47,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 18:09:47,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-12-22 18:09:47,187 INFO L87 Difference]: Start difference. First operand 345 states and 420 transitions. Second operand 8 states. [2020-12-22 18:09:47,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:09:47,452 INFO L93 Difference]: Finished difference Result 639 states and 785 transitions. [2020-12-22 18:09:47,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 18:09:47,453 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-12-22 18:09:47,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:09:47,455 INFO L225 Difference]: With dead ends: 639 [2020-12-22 18:09:47,456 INFO L226 Difference]: Without dead ends: 346 [2020-12-22 18:09:47,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2020-12-22 18:09:47,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-12-22 18:09:47,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2020-12-22 18:09:47,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-12-22 18:09:47,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 421 transitions. [2020-12-22 18:09:47,473 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 421 transitions. Word has length 88 [2020-12-22 18:09:47,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:09:47,473 INFO L481 AbstractCegarLoop]: Abstraction has 346 states and 421 transitions. [2020-12-22 18:09:47,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 18:09:47,474 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 421 transitions. [2020-12-22 18:09:47,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 18:09:47,475 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:09:47,475 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:09:47,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 18:09:47,689 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:09:47,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:09:47,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1423450748, now seen corresponding path program 5 times [2020-12-22 18:09:47,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:09:47,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736975976] [2020-12-22 18:09:47,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:09:47,706 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:09:47,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1548458661] [2020-12-22 18:09:47,707 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:09:48,672 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-12-22 18:09:48,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:09:48,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-22 18:09:48,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:09:48,835 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 18:09:48,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736975976] [2020-12-22 18:09:48,836 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:09:48,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548458661] [2020-12-22 18:09:48,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:09:48,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 18:09:48,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950833725] [2020-12-22 18:09:48,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 18:09:48,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:09:48,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 18:09:48,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-12-22 18:09:48,838 INFO L87 Difference]: Start difference. First operand 346 states and 421 transitions. Second operand 9 states. [2020-12-22 18:09:49,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:09:49,117 INFO L93 Difference]: Finished difference Result 642 states and 789 transitions. [2020-12-22 18:09:49,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 18:09:49,117 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-12-22 18:09:49,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:09:49,120 INFO L225 Difference]: With dead ends: 642 [2020-12-22 18:09:49,120 INFO L226 Difference]: Without dead ends: 348 [2020-12-22 18:09:49,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=134, Invalid=246, Unknown=0, NotChecked=0, Total=380 [2020-12-22 18:09:49,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-12-22 18:09:49,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2020-12-22 18:09:49,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-12-22 18:09:49,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 423 transitions. [2020-12-22 18:09:49,141 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 423 transitions. Word has length 89 [2020-12-22 18:09:49,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:09:49,142 INFO L481 AbstractCegarLoop]: Abstraction has 348 states and 423 transitions. [2020-12-22 18:09:49,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 18:09:49,142 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 423 transitions. [2020-12-22 18:09:49,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 18:09:49,143 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:09:49,143 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:09:49,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 18:09:49,359 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:09:49,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:09:49,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1039581629, now seen corresponding path program 6 times [2020-12-22 18:09:49,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:09:49,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351130294] [2020-12-22 18:09:49,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:09:49,379 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:09:49,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1132436011] [2020-12-22 18:09:49,379 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true