/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/nla-digbench-scaling/egcd2-ll_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:33:00,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:33:00,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:33:00,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:33:00,355 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:33:00,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:33:00,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:33:00,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:33:00,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:33:00,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:33:00,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:33:00,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:33:00,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:33:00,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:33:00,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:33:00,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:33:00,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:33:00,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:33:00,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:33:00,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:33:00,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:33:00,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:33:00,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:33:00,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:33:00,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:33:00,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:33:00,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:33:00,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:33:00,431 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 17:33:00,480 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:33:00,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:33:00,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:33:00,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:33:00,482 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:33:00,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:33:00,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:33:00,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:33:00,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:33:00,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:33:00,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:33:00,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:33:00,486 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:33:00,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:33:00,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:33:00,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:33:00,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:33:00,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:33:00,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:33:00,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:33:00,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:33:00,488 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:33:00,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:33:00,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:33:00,488 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:33:00,488 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:33:00,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:33:00,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:33:00,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:33:00,899 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:33:00,900 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:33:00,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound100.c [2021-01-06 17:33:00,992 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b89d36606/57b080ebbc2f48ed816e5955513116c0/FLAG9163c65fe [2021-01-06 17:33:01,750 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:33:01,751 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound100.c [2021-01-06 17:33:01,762 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b89d36606/57b080ebbc2f48ed816e5955513116c0/FLAG9163c65fe [2021-01-06 17:33:02,079 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b89d36606/57b080ebbc2f48ed816e5955513116c0 [2021-01-06 17:33:02,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:33:02,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:33:02,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:33:02,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:33:02,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:33:02,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:33:02" (1/1) ... [2021-01-06 17:33:02,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4597560a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:33:02, skipping insertion in model container [2021-01-06 17:33:02,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:33:02" (1/1) ... [2021-01-06 17:33:02,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:33:02,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:33:02,301 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound100.c[490,503] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~xy~0,] left hand side expression in assignment: lhs: VariableLHS[~yy~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2021-01-06 17:33:02,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:33:02,377 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:33:02,394 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound100.c[490,503] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~xy~0,] left hand side expression in assignment: lhs: VariableLHS[~yy~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2021-01-06 17:33:02,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:33:02,464 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:33:02,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:33:02 WrapperNode [2021-01-06 17:33:02,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:33:02,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:33:02,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:33:02,467 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:33:02,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:33:02" (1/1) ... [2021-01-06 17:33:02,501 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:33:02" (1/1) ... [2021-01-06 17:33:02,554 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:33:02,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:33:02,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:33:02,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:33:02,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:33:02" (1/1) ... [2021-01-06 17:33:02,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:33:02" (1/1) ... [2021-01-06 17:33:02,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:33:02" (1/1) ... [2021-01-06 17:33:02,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:33:02" (1/1) ... [2021-01-06 17:33:02,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:33:02" (1/1) ... [2021-01-06 17:33:02,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:33:02" (1/1) ... [2021-01-06 17:33:02,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:33:02" (1/1) ... [2021-01-06 17:33:02,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:33:02,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:33:02,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:33:02,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:33:02,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:33:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:33:02,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:33:02,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:33:02,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:33:02,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:33:03,266 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:33:03,266 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-01-06 17:33:03,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:33:03 BoogieIcfgContainer [2021-01-06 17:33:03,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:33:03,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:33:03,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:33:03,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:33:03,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:33:02" (1/3) ... [2021-01-06 17:33:03,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38579cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:33:03, skipping insertion in model container [2021-01-06 17:33:03,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:33:02" (2/3) ... [2021-01-06 17:33:03,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38579cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:33:03, skipping insertion in model container [2021-01-06 17:33:03,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:33:03" (3/3) ... [2021-01-06 17:33:03,290 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound100.c [2021-01-06 17:33:03,302 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:33:03,307 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-01-06 17:33:03,327 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-01-06 17:33:03,355 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:33:03,356 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:33:03,356 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:33:03,356 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:33:03,356 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:33:03,356 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:33:03,356 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:33:03,356 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:33:03,374 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2021-01-06 17:33:03,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 17:33:03,381 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:03,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:03,382 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:03,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:03,389 INFO L82 PathProgramCache]: Analyzing trace with hash 823104699, now seen corresponding path program 1 times [2021-01-06 17:33:03,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:03,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711668285] [2021-01-06 17:33:03,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:33:03,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:33:03,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711668285] [2021-01-06 17:33:03,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:33:03,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:33:03,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126770504] [2021-01-06 17:33:03,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:33:03,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:03,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:33:03,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:33:03,594 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2021-01-06 17:33:03,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:03,618 INFO L93 Difference]: Finished difference Result 87 states and 120 transitions. [2021-01-06 17:33:03,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:33:03,620 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2021-01-06 17:33:03,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:03,630 INFO L225 Difference]: With dead ends: 87 [2021-01-06 17:33:03,631 INFO L226 Difference]: Without dead ends: 41 [2021-01-06 17:33:03,634 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 [2021-01-06 17:33:03,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-01-06 17:33:03,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-01-06 17:33:03,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-01-06 17:33:03,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-01-06 17:33:03,678 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 17 [2021-01-06 17:33:03,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:03,678 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-01-06 17:33:03,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:33:03,678 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-01-06 17:33:03,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:33:03,679 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:03,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:03,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:33:03,680 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:03,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:03,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1122121916, now seen corresponding path program 1 times [2021-01-06 17:33:03,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:03,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81560744] [2021-01-06 17:33:03,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:03,707 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:03,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105421419] [2021-01-06 17:33:03,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:33:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:33:03,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:33:03,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:03,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:33:03,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81560744] [2021-01-06 17:33:03,926 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:03,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105421419] [2021-01-06 17:33:03,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:33:03,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:33:03,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030519112] [2021-01-06 17:33:03,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:33:03,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:03,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:33:03,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:33:03,931 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 5 states. [2021-01-06 17:33:04,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:04,055 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2021-01-06 17:33:04,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:33:04,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2021-01-06 17:33:04,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:04,058 INFO L225 Difference]: With dead ends: 69 [2021-01-06 17:33:04,058 INFO L226 Difference]: Without dead ends: 61 [2021-01-06 17:33:04,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:33:04,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-01-06 17:33:04,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 43. [2021-01-06 17:33:04,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-01-06 17:33:04,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2021-01-06 17:33:04,069 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 18 [2021-01-06 17:33:04,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:04,069 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2021-01-06 17:33:04,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:33:04,069 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2021-01-06 17:33:04,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:33:04,070 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:04,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:04,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:33:04,285 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:04,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:04,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1122125890, now seen corresponding path program 1 times [2021-01-06 17:33:04,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:04,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76461374] [2021-01-06 17:33:04,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:04,321 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:04,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [23378451] [2021-01-06 17:33:04,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:33:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:33:04,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 17:33:04,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:04,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:33:04,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76461374] [2021-01-06 17:33:04,554 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:04,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23378451] [2021-01-06 17:33:04,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:33:04,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 17:33:04,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340037742] [2021-01-06 17:33:04,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:33:04,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:04,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:33:04,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:33:04,561 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 8 states. [2021-01-06 17:33:04,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:04,895 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2021-01-06 17:33:04,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:33:04,896 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2021-01-06 17:33:04,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:04,898 INFO L225 Difference]: With dead ends: 79 [2021-01-06 17:33:04,898 INFO L226 Difference]: Without dead ends: 77 [2021-01-06 17:33:04,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:33:04,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-01-06 17:33:04,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 45. [2021-01-06 17:33:04,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-01-06 17:33:04,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2021-01-06 17:33:04,909 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 18 [2021-01-06 17:33:04,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:04,910 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-01-06 17:33:04,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:33:04,910 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2021-01-06 17:33:04,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 17:33:04,911 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:04,911 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] [2021-01-06 17:33:05,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:33:05,125 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:05,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:05,127 INFO L82 PathProgramCache]: Analyzing trace with hash 326346277, now seen corresponding path program 1 times [2021-01-06 17:33:05,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:05,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373386992] [2021-01-06 17:33:05,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:05,159 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:05,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1529384676] [2021-01-06 17:33:05,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:33:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:33:05,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 17:33:05,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:05,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:33:05,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373386992] [2021-01-06 17:33:05,610 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:05,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529384676] [2021-01-06 17:33:05,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:33:05,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-01-06 17:33:05,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935851314] [2021-01-06 17:33:05,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:33:05,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:05,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:33:05,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:33:05,613 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 10 states. [2021-01-06 17:33:05,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:05,974 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2021-01-06 17:33:05,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 17:33:05,975 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2021-01-06 17:33:05,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:05,979 INFO L225 Difference]: With dead ends: 63 [2021-01-06 17:33:05,979 INFO L226 Difference]: Without dead ends: 61 [2021-01-06 17:33:05,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:33:05,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-01-06 17:33:06,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2021-01-06 17:33:06,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-01-06 17:33:06,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2021-01-06 17:33:06,008 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 20 [2021-01-06 17:33:06,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:06,008 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2021-01-06 17:33:06,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:33:06,009 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2021-01-06 17:33:06,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-06 17:33:06,010 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:06,010 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] [2021-01-06 17:33:06,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:33:06,226 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:06,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:06,228 INFO L82 PathProgramCache]: Analyzing trace with hash 86317224, now seen corresponding path program 1 times [2021-01-06 17:33:06,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:06,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982800814] [2021-01-06 17:33:06,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:06,244 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:06,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340868700] [2021-01-06 17:33:06,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:33:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:33:06,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 17:33:06,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:06,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:33:06,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982800814] [2021-01-06 17:33:06,477 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:06,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340868700] [2021-01-06 17:33:06,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:33:06,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 17:33:06,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344300781] [2021-01-06 17:33:06,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:33:06,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:06,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:33:06,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:33:06,480 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 8 states. [2021-01-06 17:33:06,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:06,656 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2021-01-06 17:33:06,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:33:06,656 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2021-01-06 17:33:06,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:06,657 INFO L225 Difference]: With dead ends: 61 [2021-01-06 17:33:06,657 INFO L226 Difference]: Without dead ends: 59 [2021-01-06 17:33:06,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:33:06,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-01-06 17:33:06,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2021-01-06 17:33:06,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-01-06 17:33:06,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2021-01-06 17:33:06,666 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 22 [2021-01-06 17:33:06,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:06,667 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2021-01-06 17:33:06,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:33:06,667 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2021-01-06 17:33:06,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-06 17:33:06,668 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:06,668 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] [2021-01-06 17:33:06,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:33:06,884 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:06,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:06,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1346631627, now seen corresponding path program 1 times [2021-01-06 17:33:06,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:06,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129495041] [2021-01-06 17:33:06,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:06,905 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:06,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [868012115] [2021-01-06 17:33:06,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:33:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:33:06,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-06 17:33:06,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:07,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:33:07,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129495041] [2021-01-06 17:33:07,114 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:07,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868012115] [2021-01-06 17:33:07,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:33:07,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 17:33:07,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496773794] [2021-01-06 17:33:07,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:33:07,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:07,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:33:07,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:33:07,116 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 7 states. [2021-01-06 17:33:09,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:09,341 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2021-01-06 17:33:09,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:33:09,341 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2021-01-06 17:33:09,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:09,342 INFO L225 Difference]: With dead ends: 63 [2021-01-06 17:33:09,342 INFO L226 Difference]: Without dead ends: 61 [2021-01-06 17:33:09,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:33:09,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-01-06 17:33:09,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2021-01-06 17:33:09,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-01-06 17:33:09,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2021-01-06 17:33:09,358 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 24 [2021-01-06 17:33:09,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:09,358 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2021-01-06 17:33:09,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:33:09,358 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2021-01-06 17:33:09,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-06 17:33:09,359 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:09,360 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] [2021-01-06 17:33:09,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-01-06 17:33:09,575 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:09,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:09,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1781730828, now seen corresponding path program 1 times [2021-01-06 17:33:09,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:09,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190024788] [2021-01-06 17:33:09,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:09,592 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:09,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1615463336] [2021-01-06 17:33:09,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:33:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:33:09,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:33:09,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:09,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:33:09,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190024788] [2021-01-06 17:33:09,724 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:09,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615463336] [2021-01-06 17:33:09,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:33:09,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:33:09,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528268209] [2021-01-06 17:33:09,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:33:09,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:09,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:33:09,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:33:09,726 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 6 states. [2021-01-06 17:33:09,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:09,928 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2021-01-06 17:33:09,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:33:09,929 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2021-01-06 17:33:09,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:09,930 INFO L225 Difference]: With dead ends: 104 [2021-01-06 17:33:09,930 INFO L226 Difference]: Without dead ends: 102 [2021-01-06 17:33:09,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:33:09,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-01-06 17:33:09,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 74. [2021-01-06 17:33:09,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-01-06 17:33:09,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2021-01-06 17:33:09,944 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 27 [2021-01-06 17:33:09,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:09,945 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2021-01-06 17:33:09,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:33:09,945 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2021-01-06 17:33:09,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-06 17:33:09,946 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:09,946 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] [2021-01-06 17:33:10,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:33:10,160 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:10,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:10,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1655367537, now seen corresponding path program 1 times [2021-01-06 17:33:10,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:10,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782426090] [2021-01-06 17:33:10,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:10,177 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:10,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1322970507] [2021-01-06 17:33:10,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:33:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:33:10,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 17:33:10,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:10,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:33:10,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782426090] [2021-01-06 17:33:10,328 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:10,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322970507] [2021-01-06 17:33:10,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:33:10,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:33:10,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599564119] [2021-01-06 17:33:10,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:33:10,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:10,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:33:10,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:33:10,330 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 7 states. [2021-01-06 17:33:10,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:10,551 INFO L93 Difference]: Finished difference Result 165 states and 177 transitions. [2021-01-06 17:33:10,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:33:10,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2021-01-06 17:33:10,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:10,554 INFO L225 Difference]: With dead ends: 165 [2021-01-06 17:33:10,554 INFO L226 Difference]: Without dead ends: 157 [2021-01-06 17:33:10,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:33:10,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-01-06 17:33:10,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 109. [2021-01-06 17:33:10,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2021-01-06 17:33:10,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 131 transitions. [2021-01-06 17:33:10,576 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 131 transitions. Word has length 30 [2021-01-06 17:33:10,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:10,576 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 131 transitions. [2021-01-06 17:33:10,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:33:10,577 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 131 transitions. [2021-01-06 17:33:10,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 17:33:10,577 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:10,578 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:10,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:33:10,792 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:10,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:10,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1674279834, now seen corresponding path program 1 times [2021-01-06 17:33:10,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:10,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917566786] [2021-01-06 17:33:10,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:10,809 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:10,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1476168754] [2021-01-06 17:33:10,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:33:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:33:10,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-06 17:33:10,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:11,065 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:33:11,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917566786] [2021-01-06 17:33:11,066 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:11,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476168754] [2021-01-06 17:33:11,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:33:11,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:33:11,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601945778] [2021-01-06 17:33:11,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:33:11,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:11,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:33:11,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:33:11,074 INFO L87 Difference]: Start difference. First operand 109 states and 131 transitions. Second operand 8 states. [2021-01-06 17:33:11,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:11,312 INFO L93 Difference]: Finished difference Result 176 states and 211 transitions. [2021-01-06 17:33:11,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:33:11,313 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2021-01-06 17:33:11,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:11,315 INFO L225 Difference]: With dead ends: 176 [2021-01-06 17:33:11,316 INFO L226 Difference]: Without dead ends: 170 [2021-01-06 17:33:11,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:33:11,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-01-06 17:33:11,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 157. [2021-01-06 17:33:11,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2021-01-06 17:33:11,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 194 transitions. [2021-01-06 17:33:11,344 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 194 transitions. Word has length 32 [2021-01-06 17:33:11,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:11,344 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 194 transitions. [2021-01-06 17:33:11,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:33:11,344 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 194 transitions. [2021-01-06 17:33:11,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 17:33:11,345 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:11,346 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:11,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-01-06 17:33:11,561 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:11,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:11,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1629657891, now seen corresponding path program 1 times [2021-01-06 17:33:11,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:11,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742833310] [2021-01-06 17:33:11,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:11,577 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:11,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [680895395] [2021-01-06 17:33:11,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:33:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:33:11,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 63 conjunts are in the unsatisfiable core [2021-01-06 17:33:11,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:12,184 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:33:12,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742833310] [2021-01-06 17:33:12,184 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:12,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680895395] [2021-01-06 17:33:12,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:33:12,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-01-06 17:33:12,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512527547] [2021-01-06 17:33:12,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-06 17:33:12,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:12,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-06 17:33:12,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-01-06 17:33:12,187 INFO L87 Difference]: Start difference. First operand 157 states and 194 transitions. Second operand 16 states. [2021-01-06 17:33:12,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:12,920 INFO L93 Difference]: Finished difference Result 167 states and 200 transitions. [2021-01-06 17:33:12,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-06 17:33:12,921 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 34 [2021-01-06 17:33:12,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:12,922 INFO L225 Difference]: With dead ends: 167 [2021-01-06 17:33:12,922 INFO L226 Difference]: Without dead ends: 165 [2021-01-06 17:33:12,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2021-01-06 17:33:12,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-01-06 17:33:12,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 157. [2021-01-06 17:33:12,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2021-01-06 17:33:12,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 192 transitions. [2021-01-06 17:33:12,966 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 192 transitions. Word has length 34 [2021-01-06 17:33:12,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:12,966 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 192 transitions. [2021-01-06 17:33:12,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-01-06 17:33:12,967 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 192 transitions. [2021-01-06 17:33:12,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-06 17:33:12,970 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:12,970 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:13,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:33:13,184 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:13,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:13,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1561987776, now seen corresponding path program 1 times [2021-01-06 17:33:13,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:13,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829300380] [2021-01-06 17:33:13,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:13,199 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:13,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2112138265] [2021-01-06 17:33:13,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:33:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:33:13,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 49 conjunts are in the unsatisfiable core [2021-01-06 17:33:13,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:13,678 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:33:13,704 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:33:13,713 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 17:33:13,751 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:33:13,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829300380] [2021-01-06 17:33:13,752 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:13,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112138265] [2021-01-06 17:33:13,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:33:13,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 17:33:13,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511854184] [2021-01-06 17:33:13,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:33:13,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:13,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:33:13,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:33:13,754 INFO L87 Difference]: Start difference. First operand 157 states and 192 transitions. Second operand 12 states. [2021-01-06 17:33:14,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:14,259 INFO L93 Difference]: Finished difference Result 172 states and 205 transitions. [2021-01-06 17:33:14,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 17:33:14,260 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2021-01-06 17:33:14,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:14,261 INFO L225 Difference]: With dead ends: 172 [2021-01-06 17:33:14,261 INFO L226 Difference]: Without dead ends: 170 [2021-01-06 17:33:14,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:33:14,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-01-06 17:33:14,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 157. [2021-01-06 17:33:14,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2021-01-06 17:33:14,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 190 transitions. [2021-01-06 17:33:14,281 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 190 transitions. Word has length 36 [2021-01-06 17:33:14,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:14,282 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 190 transitions. [2021-01-06 17:33:14,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:33:14,282 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 190 transitions. [2021-01-06 17:33:14,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-06 17:33:14,283 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:14,283 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:14,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:33:14,498 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:14,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:14,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1088491650, now seen corresponding path program 2 times [2021-01-06 17:33:14,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:14,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187048354] [2021-01-06 17:33:14,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:14,513 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:14,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [66224333] [2021-01-06 17:33:14,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:33:14,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:33:14,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:33:14,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 34 conjunts are in the unsatisfiable core [2021-01-06 17:33:14,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:14,740 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:33:14,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187048354] [2021-01-06 17:33:14,741 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:14,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66224333] [2021-01-06 17:33:14,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:33:14,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:33:14,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233261920] [2021-01-06 17:33:14,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:33:14,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:14,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:33:14,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:33:14,743 INFO L87 Difference]: Start difference. First operand 157 states and 190 transitions. Second operand 10 states. [2021-01-06 17:33:15,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:15,022 INFO L93 Difference]: Finished difference Result 264 states and 318 transitions. [2021-01-06 17:33:15,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:33:15,023 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2021-01-06 17:33:15,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:15,025 INFO L225 Difference]: With dead ends: 264 [2021-01-06 17:33:15,025 INFO L226 Difference]: Without dead ends: 262 [2021-01-06 17:33:15,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:33:15,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-01-06 17:33:15,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 202. [2021-01-06 17:33:15,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2021-01-06 17:33:15,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 248 transitions. [2021-01-06 17:33:15,060 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 248 transitions. Word has length 36 [2021-01-06 17:33:15,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:15,061 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 248 transitions. [2021-01-06 17:33:15,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:33:15,061 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 248 transitions. [2021-01-06 17:33:15,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-01-06 17:33:15,062 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:15,062 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:15,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-06 17:33:15,274 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:15,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:15,274 INFO L82 PathProgramCache]: Analyzing trace with hash -50686429, now seen corresponding path program 1 times [2021-01-06 17:33:15,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:15,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690363701] [2021-01-06 17:33:15,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:15,292 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:15,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768602082] [2021-01-06 17:33:15,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:33:15,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:33:15,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 56 conjunts are in the unsatisfiable core [2021-01-06 17:33:15,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:15,749 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:33:15,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690363701] [2021-01-06 17:33:15,750 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:15,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768602082] [2021-01-06 17:33:15,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:33:15,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-01-06 17:33:15,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362070137] [2021-01-06 17:33:15,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 17:33:15,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:15,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 17:33:15,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:33:15,752 INFO L87 Difference]: Start difference. First operand 202 states and 248 transitions. Second operand 13 states. [2021-01-06 17:33:16,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:16,425 INFO L93 Difference]: Finished difference Result 247 states and 299 transitions. [2021-01-06 17:33:16,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-06 17:33:16,425 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2021-01-06 17:33:16,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:16,427 INFO L225 Difference]: With dead ends: 247 [2021-01-06 17:33:16,427 INFO L226 Difference]: Without dead ends: 241 [2021-01-06 17:33:16,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2021-01-06 17:33:16,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-01-06 17:33:16,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 234. [2021-01-06 17:33:16,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2021-01-06 17:33:16,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 287 transitions. [2021-01-06 17:33:16,476 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 287 transitions. Word has length 39 [2021-01-06 17:33:16,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:16,476 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 287 transitions. [2021-01-06 17:33:16,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 17:33:16,476 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 287 transitions. [2021-01-06 17:33:16,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-06 17:33:16,477 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:16,477 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:16,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-01-06 17:33:16,692 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:16,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:16,693 INFO L82 PathProgramCache]: Analyzing trace with hash -269629041, now seen corresponding path program 2 times [2021-01-06 17:33:16,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:16,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406799909] [2021-01-06 17:33:16,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:16,705 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:16,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [416456051] [2021-01-06 17:33:16,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:33:16,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:33:16,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:33:16,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:33:16,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:16,828 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:33:16,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406799909] [2021-01-06 17:33:16,829 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:16,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416456051] [2021-01-06 17:33:16,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:33:16,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:33:16,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780113899] [2021-01-06 17:33:16,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:33:16,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:16,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:33:16,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:33:16,831 INFO L87 Difference]: Start difference. First operand 234 states and 287 transitions. Second operand 5 states. [2021-01-06 17:33:16,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:16,943 INFO L93 Difference]: Finished difference Result 302 states and 365 transitions. [2021-01-06 17:33:16,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:33:16,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2021-01-06 17:33:16,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:16,945 INFO L225 Difference]: With dead ends: 302 [2021-01-06 17:33:16,945 INFO L226 Difference]: Without dead ends: 210 [2021-01-06 17:33:16,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:33:16,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-01-06 17:33:16,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 190. [2021-01-06 17:33:16,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2021-01-06 17:33:16,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 221 transitions. [2021-01-06 17:33:16,976 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 221 transitions. Word has length 44 [2021-01-06 17:33:16,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:16,976 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 221 transitions. [2021-01-06 17:33:16,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:33:16,976 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 221 transitions. [2021-01-06 17:33:16,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-06 17:33:16,977 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:16,977 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:17,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 17:33:17,192 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:17,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:17,192 INFO L82 PathProgramCache]: Analyzing trace with hash 75787250, now seen corresponding path program 1 times [2021-01-06 17:33:17,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:17,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314464518] [2021-01-06 17:33:17,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:17,203 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:17,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1030047508] [2021-01-06 17:33:17,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:33:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:33:17,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 84 conjunts are in the unsatisfiable core [2021-01-06 17:33:17,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:18,053 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:33:18,056 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:33:18,106 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:33:18,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314464518] [2021-01-06 17:33:18,106 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:18,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030047508] [2021-01-06 17:33:18,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:33:18,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-01-06 17:33:18,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499076494] [2021-01-06 17:33:18,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 17:33:18,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:18,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 17:33:18,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:33:18,108 INFO L87 Difference]: Start difference. First operand 190 states and 221 transitions. Second operand 15 states. [2021-01-06 17:33:20,588 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2021-01-06 17:33:25,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:25,508 INFO L93 Difference]: Finished difference Result 201 states and 230 transitions. [2021-01-06 17:33:25,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-06 17:33:25,509 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2021-01-06 17:33:25,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:25,510 INFO L225 Difference]: With dead ends: 201 [2021-01-06 17:33:25,511 INFO L226 Difference]: Without dead ends: 199 [2021-01-06 17:33:25,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2021-01-06 17:33:25,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-01-06 17:33:25,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 158. [2021-01-06 17:33:25,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2021-01-06 17:33:25,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 183 transitions. [2021-01-06 17:33:25,536 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 183 transitions. Word has length 45 [2021-01-06 17:33:25,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:25,537 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 183 transitions. [2021-01-06 17:33:25,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 17:33:25,537 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 183 transitions. [2021-01-06 17:33:25,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-06 17:33:25,537 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:25,537 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:25,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:33:25,750 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:25,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:25,751 INFO L82 PathProgramCache]: Analyzing trace with hash -397708876, now seen corresponding path program 3 times [2021-01-06 17:33:25,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:25,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287878472] [2021-01-06 17:33:25,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:25,766 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:25,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [949263199] [2021-01-06 17:33:25,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:33:25,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 17:33:25,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:33:25,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-06 17:33:25,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:25,920 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-01-06 17:33:25,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287878472] [2021-01-06 17:33:25,920 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:25,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949263199] [2021-01-06 17:33:25,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:33:25,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:33:25,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979405271] [2021-01-06 17:33:25,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:33:25,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:25,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:33:25,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:33:25,922 INFO L87 Difference]: Start difference. First operand 158 states and 183 transitions. Second operand 5 states. [2021-01-06 17:33:26,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:26,026 INFO L93 Difference]: Finished difference Result 158 states and 183 transitions. [2021-01-06 17:33:26,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:33:26,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2021-01-06 17:33:26,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:26,028 INFO L225 Difference]: With dead ends: 158 [2021-01-06 17:33:26,028 INFO L226 Difference]: Without dead ends: 156 [2021-01-06 17:33:26,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:33:26,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-01-06 17:33:26,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 121. [2021-01-06 17:33:26,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2021-01-06 17:33:26,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 135 transitions. [2021-01-06 17:33:26,049 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 135 transitions. Word has length 45 [2021-01-06 17:33:26,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:26,049 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 135 transitions. [2021-01-06 17:33:26,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:33:26,049 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 135 transitions. [2021-01-06 17:33:26,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-06 17:33:26,050 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:26,050 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:26,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-06 17:33:26,265 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:26,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:26,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1367297969, now seen corresponding path program 2 times [2021-01-06 17:33:26,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:26,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23473455] [2021-01-06 17:33:26,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:26,276 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:26,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [950050272] [2021-01-06 17:33:26,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:33:26,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:33:26,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:33:26,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 55 conjunts are in the unsatisfiable core [2021-01-06 17:33:26,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:26,769 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:33:26,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23473455] [2021-01-06 17:33:26,770 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:26,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950050272] [2021-01-06 17:33:26,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:33:26,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-01-06 17:33:26,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917003348] [2021-01-06 17:33:26,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 17:33:26,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:26,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 17:33:26,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:33:26,772 INFO L87 Difference]: Start difference. First operand 121 states and 135 transitions. Second operand 13 states. [2021-01-06 17:33:31,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:31,765 INFO L93 Difference]: Finished difference Result 161 states and 179 transitions. [2021-01-06 17:33:31,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-06 17:33:31,766 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2021-01-06 17:33:31,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:31,767 INFO L225 Difference]: With dead ends: 161 [2021-01-06 17:33:31,768 INFO L226 Difference]: Without dead ends: 155 [2021-01-06 17:33:31,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2021-01-06 17:33:31,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-01-06 17:33:31,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2021-01-06 17:33:31,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2021-01-06 17:33:31,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 169 transitions. [2021-01-06 17:33:31,794 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 169 transitions. Word has length 48 [2021-01-06 17:33:31,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:31,794 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 169 transitions. [2021-01-06 17:33:31,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 17:33:31,794 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 169 transitions. [2021-01-06 17:33:31,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-06 17:33:31,795 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:31,795 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:32,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-06 17:33:32,009 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:32,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:32,010 INFO L82 PathProgramCache]: Analyzing trace with hash 194484878, now seen corresponding path program 3 times [2021-01-06 17:33:32,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:32,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688208923] [2021-01-06 17:33:32,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:32,029 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:32,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [412400992] [2021-01-06 17:33:32,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true