/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/egcd-ll_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:31:28,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:31:28,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:31:28,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:31:28,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:31:28,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:31:28,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:31:28,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:31:28,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:31:28,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:31:28,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:31:28,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:31:28,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:31:28,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:31:28,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:31:28,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:31:28,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:31:28,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:31:28,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:31:28,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:31:28,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:31:28,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:31:28,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:31:28,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:31:28,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:31:28,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:31:28,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:31:28,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:31:28,186 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 17:31:28,229 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:31:28,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:31:28,235 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:31:28,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:31:28,235 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:31:28,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:31:28,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:31:28,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:31:28,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:31:28,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:31:28,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:31:28,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:31:28,238 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:31:28,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:31:28,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:31:28,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:31:28,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:31:28,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:31:28,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:31:28,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:31:28,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:31:28,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:31:28,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:31:28,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:31:28,240 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:31:28,240 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:31:28,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:31:28,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:31:28,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:31:28,632 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:31:28,633 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:31:28,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound100.c [2021-01-06 17:31:28,721 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9606729d0/a9eda748cbd94f70aa9bb94b5cff65a9/FLAG56554b027 [2021-01-06 17:31:29,357 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:31:29,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound100.c [2021-01-06 17:31:29,366 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9606729d0/a9eda748cbd94f70aa9bb94b5cff65a9/FLAG56554b027 [2021-01-06 17:31:29,692 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9606729d0/a9eda748cbd94f70aa9bb94b5cff65a9 [2021-01-06 17:31:29,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:31:29,699 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:31:29,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:31:29,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:31:29,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:31:29,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:31:29" (1/1) ... [2021-01-06 17:31:29,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22d3df91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:31:29, skipping insertion in model container [2021-01-06 17:31:29,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:31:29" (1/1) ... [2021-01-06 17:31:29,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:31:29,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:31:29,946 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/egcd-ll_valuebound100.c[489,502] 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[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2021-01-06 17:31:29,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:31:29,982 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:31:29,995 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/egcd-ll_valuebound100.c[489,502] 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[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2021-01-06 17:31:30,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:31:30,021 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:31:30,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:31:30 WrapperNode [2021-01-06 17:31:30,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:31:30,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:31:30,023 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:31:30,023 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:31:30,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:31:30" (1/1) ... [2021-01-06 17:31:30,038 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:31:30" (1/1) ... [2021-01-06 17:31:30,064 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:31:30,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:31:30,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:31:30,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:31:30,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:31:30" (1/1) ... [2021-01-06 17:31:30,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:31:30" (1/1) ... [2021-01-06 17:31:30,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:31:30" (1/1) ... [2021-01-06 17:31:30,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:31:30" (1/1) ... [2021-01-06 17:31:30,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:31:30" (1/1) ... [2021-01-06 17:31:30,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:31:30" (1/1) ... [2021-01-06 17:31:30,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:31:30" (1/1) ... [2021-01-06 17:31:30,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:31:30,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:31:30,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:31:30,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:31:30,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:31:30" (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 17:31:30,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:31:30,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:31:30,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:31:30,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:31:30,553 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:31:30,553 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-01-06 17:31:30,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:31:30 BoogieIcfgContainer [2021-01-06 17:31:30,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:31:30,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:31:30,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:31:30,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:31:30,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:31:29" (1/3) ... [2021-01-06 17:31:30,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189652fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:31:30, skipping insertion in model container [2021-01-06 17:31:30,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:31:30" (2/3) ... [2021-01-06 17:31:30,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189652fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:31:30, skipping insertion in model container [2021-01-06 17:31:30,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:31:30" (3/3) ... [2021-01-06 17:31:30,588 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound100.c [2021-01-06 17:31:30,608 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:31:30,620 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2021-01-06 17:31:30,642 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-01-06 17:31:30,693 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:31:30,694 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:31:30,694 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:31:30,694 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:31:30,694 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:31:30,694 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:31:30,694 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:31:30,704 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:31:30,718 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2021-01-06 17:31:30,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:31:30,723 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:30,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:31:30,724 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:30,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:30,730 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2021-01-06 17:31:30,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:30,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079698219] [2021-01-06 17:31:30,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:31:30,902 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 17:31:30,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079698219] [2021-01-06 17:31:30,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:31:30,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:31:30,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533613845] [2021-01-06 17:31:30,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:31:30,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:30,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:31:30,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:31:30,928 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2021-01-06 17:31:30,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:30,951 INFO L93 Difference]: Finished difference Result 85 states and 112 transitions. [2021-01-06 17:31:30,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:31:30,953 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2021-01-06 17:31:30,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:30,963 INFO L225 Difference]: With dead ends: 85 [2021-01-06 17:31:30,963 INFO L226 Difference]: Without dead ends: 40 [2021-01-06 17:31:30,966 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 17:31:30,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-01-06 17:31:31,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-01-06 17:31:31,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-01-06 17:31:31,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2021-01-06 17:31:31,007 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 13 [2021-01-06 17:31:31,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:31,008 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-01-06 17:31:31,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:31:31,008 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2021-01-06 17:31:31,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:31:31,009 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:31,009 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:31:31,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:31:31,010 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:31,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:31,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2021-01-06 17:31:31,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:31,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089929791] [2021-01-06 17:31:31,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:31,041 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:31,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [756730366] [2021-01-06 17:31:31,043 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 17:31:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:31:31,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:31:31,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:31,252 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 17:31:31,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089929791] [2021-01-06 17:31:31,253 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:31,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756730366] [2021-01-06 17:31:31,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:31:31,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:31:31,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303961124] [2021-01-06 17:31:31,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:31:31,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:31,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:31:31,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:31:31,258 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 5 states. [2021-01-06 17:31:31,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:31,416 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2021-01-06 17:31:31,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:31:31,417 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-01-06 17:31:31,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:31,419 INFO L225 Difference]: With dead ends: 70 [2021-01-06 17:31:31,419 INFO L226 Difference]: Without dead ends: 66 [2021-01-06 17:31:31,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:31:31,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-01-06 17:31:31,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2021-01-06 17:31:31,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-01-06 17:31:31,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2021-01-06 17:31:31,434 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 13 [2021-01-06 17:31:31,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:31,434 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2021-01-06 17:31:31,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:31:31,435 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2021-01-06 17:31:31,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 17:31:31,435 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:31,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:31:31,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:31:31,650 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:31,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:31,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1454243009, now seen corresponding path program 1 times [2021-01-06 17:31:31,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:31,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994897334] [2021-01-06 17:31:31,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:31,673 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:31,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [456013752] [2021-01-06 17:31:31,674 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 17:31:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:31:31,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-06 17:31:31,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:32,050 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 17:31:32,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994897334] [2021-01-06 17:31:32,051 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:32,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456013752] [2021-01-06 17:31:32,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:31:32,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-01-06 17:31:32,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071227473] [2021-01-06 17:31:32,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:31:32,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:32,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:31:32,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:31:32,054 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand 12 states. [2021-01-06 17:31:32,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:32,560 INFO L93 Difference]: Finished difference Result 98 states and 112 transitions. [2021-01-06 17:31:32,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:31:32,560 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2021-01-06 17:31:32,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:32,563 INFO L225 Difference]: With dead ends: 98 [2021-01-06 17:31:32,563 INFO L226 Difference]: Without dead ends: 96 [2021-01-06 17:31:32,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:31:32,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-01-06 17:31:32,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 70. [2021-01-06 17:31:32,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-01-06 17:31:32,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2021-01-06 17:31:32,578 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 15 [2021-01-06 17:31:32,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:32,578 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2021-01-06 17:31:32,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:31:32,578 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2021-01-06 17:31:32,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 17:31:32,579 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:32,579 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 17:31:32,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:31:32,794 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:32,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:32,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1663317220, now seen corresponding path program 1 times [2021-01-06 17:31:32,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:32,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888108984] [2021-01-06 17:31:32,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:32,814 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:32,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [884519958] [2021-01-06 17:31:32,815 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 17:31:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:31:32,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 17:31:32,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:33,033 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 17:31:33,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888108984] [2021-01-06 17:31:33,034 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:33,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884519958] [2021-01-06 17:31:33,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:31:33,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 17:31:33,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976401462] [2021-01-06 17:31:33,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:31:33,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:33,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:31:33,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:31:33,038 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand 8 states. [2021-01-06 17:31:33,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:33,254 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2021-01-06 17:31:33,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:31:33,254 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2021-01-06 17:31:33,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:33,258 INFO L225 Difference]: With dead ends: 84 [2021-01-06 17:31:33,258 INFO L226 Difference]: Without dead ends: 76 [2021-01-06 17:31:33,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:31:33,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-01-06 17:31:33,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2021-01-06 17:31:33,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-01-06 17:31:33,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 79 transitions. [2021-01-06 17:31:33,285 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 79 transitions. Word has length 17 [2021-01-06 17:31:33,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:33,285 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 79 transitions. [2021-01-06 17:31:33,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:31:33,286 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 79 transitions. [2021-01-06 17:31:33,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 17:31:33,286 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:33,286 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 17:31:33,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:31:33,503 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:33,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:33,505 INFO L82 PathProgramCache]: Analyzing trace with hash 850548497, now seen corresponding path program 1 times [2021-01-06 17:31:33,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:33,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649664369] [2021-01-06 17:31:33,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:33,532 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:33,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [437111112] [2021-01-06 17:31:33,532 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 17:31:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:31:33,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-06 17:31:33,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:33,634 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 17:31:33,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649664369] [2021-01-06 17:31:33,635 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:33,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437111112] [2021-01-06 17:31:33,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:31:33,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:31:33,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580333042] [2021-01-06 17:31:33,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:31:33,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:33,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:31:33,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:31:33,639 INFO L87 Difference]: Start difference. First operand 68 states and 79 transitions. Second operand 4 states. [2021-01-06 17:31:33,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:33,692 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2021-01-06 17:31:33,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:31:33,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2021-01-06 17:31:33,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:33,696 INFO L225 Difference]: With dead ends: 68 [2021-01-06 17:31:33,696 INFO L226 Difference]: Without dead ends: 66 [2021-01-06 17:31:33,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:31:33,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-01-06 17:31:33,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-01-06 17:31:33,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-01-06 17:31:33,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2021-01-06 17:31:33,719 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 20 [2021-01-06 17:31:33,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:33,720 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2021-01-06 17:31:33,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:31:33,720 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2021-01-06 17:31:33,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-06 17:31:33,721 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:33,721 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] [2021-01-06 17:31:33,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:31:33,938 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:33,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:33,939 INFO L82 PathProgramCache]: Analyzing trace with hash 598848193, now seen corresponding path program 1 times [2021-01-06 17:31:33,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:33,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415374634] [2021-01-06 17:31:33,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:33,957 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:33,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [592015698] [2021-01-06 17:31:33,958 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 17:31:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:31:34,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:31:34,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:34,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 17:31:34,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415374634] [2021-01-06 17:31:34,069 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:34,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592015698] [2021-01-06 17:31:34,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:31:34,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:31:34,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599725342] [2021-01-06 17:31:34,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:31:34,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:34,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:31:34,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:31:34,072 INFO L87 Difference]: Start difference. First operand 66 states and 76 transitions. Second operand 5 states. [2021-01-06 17:31:34,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:34,169 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2021-01-06 17:31:34,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:31:34,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2021-01-06 17:31:34,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:34,170 INFO L225 Difference]: With dead ends: 88 [2021-01-06 17:31:34,170 INFO L226 Difference]: Without dead ends: 84 [2021-01-06 17:31:34,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:31:34,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-01-06 17:31:34,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 72. [2021-01-06 17:31:34,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2021-01-06 17:31:34,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2021-01-06 17:31:34,178 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 21 [2021-01-06 17:31:34,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:34,178 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2021-01-06 17:31:34,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:31:34,179 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2021-01-06 17:31:34,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-06 17:31:34,179 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:34,180 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 17:31:34,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-01-06 17:31:34,394 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:34,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:34,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1333477300, now seen corresponding path program 1 times [2021-01-06 17:31:34,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:34,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977916529] [2021-01-06 17:31:34,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:34,410 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:34,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [758339323] [2021-01-06 17:31:34,410 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 17:31:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:31:34,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-06 17:31:34,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:34,579 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 17:31:34,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977916529] [2021-01-06 17:31:34,579 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:34,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758339323] [2021-01-06 17:31:34,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:31:34,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 17:31:34,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004742320] [2021-01-06 17:31:34,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:31:34,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:34,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:31:34,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:31:34,582 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand 8 states. [2021-01-06 17:31:34,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:34,741 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2021-01-06 17:31:34,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:31:34,742 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2021-01-06 17:31:34,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:34,743 INFO L225 Difference]: With dead ends: 80 [2021-01-06 17:31:34,743 INFO L226 Difference]: Without dead ends: 72 [2021-01-06 17:31:34,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:31:34,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-01-06 17:31:34,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2021-01-06 17:31:34,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-01-06 17:31:34,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2021-01-06 17:31:34,752 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 22 [2021-01-06 17:31:34,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:34,753 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2021-01-06 17:31:34,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:31:34,753 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2021-01-06 17:31:34,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-06 17:31:34,754 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:34,754 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:31:34,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:31:34,969 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:34,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:34,970 INFO L82 PathProgramCache]: Analyzing trace with hash -89606074, now seen corresponding path program 1 times [2021-01-06 17:31:34,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:34,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87025392] [2021-01-06 17:31:34,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:34,984 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:34,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [535941125] [2021-01-06 17:31:34,985 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 17:31:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:31:35,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-06 17:31:35,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:35,209 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:31:35,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87025392] [2021-01-06 17:31:35,210 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:35,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535941125] [2021-01-06 17:31:35,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:31:35,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:31:35,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939100112] [2021-01-06 17:31:35,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:31:35,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:35,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:31:35,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:31:35,212 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 9 states. [2021-01-06 17:31:35,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:35,728 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2021-01-06 17:31:35,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:31:35,729 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2021-01-06 17:31:35,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:35,730 INFO L225 Difference]: With dead ends: 105 [2021-01-06 17:31:35,730 INFO L226 Difference]: Without dead ends: 103 [2021-01-06 17:31:35,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-01-06 17:31:35,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-01-06 17:31:35,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 74. [2021-01-06 17:31:35,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-01-06 17:31:35,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2021-01-06 17:31:35,739 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 23 [2021-01-06 17:31:35,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:35,740 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2021-01-06 17:31:35,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:31:35,740 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2021-01-06 17:31:35,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-06 17:31:35,741 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:35,741 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] [2021-01-06 17:31:35,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:31:35,957 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:35,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:35,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1021281049, now seen corresponding path program 1 times [2021-01-06 17:31:35,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:35,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202311098] [2021-01-06 17:31:35,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:35,976 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:35,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [617337951] [2021-01-06 17:31:35,977 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 17:31:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:31:36,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 45 conjunts are in the unsatisfiable core [2021-01-06 17:31:36,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:36,322 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 17:31:36,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202311098] [2021-01-06 17:31:36,323 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:36,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617337951] [2021-01-06 17:31:36,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:31:36,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:31:36,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154150278] [2021-01-06 17:31:36,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:31:36,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:36,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:31:36,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:31:36,326 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 11 states. [2021-01-06 17:31:36,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:36,753 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2021-01-06 17:31:36,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 17:31:36,753 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2021-01-06 17:31:36,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:36,754 INFO L225 Difference]: With dead ends: 118 [2021-01-06 17:31:36,754 INFO L226 Difference]: Without dead ends: 104 [2021-01-06 17:31:36,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-01-06 17:31:36,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-01-06 17:31:36,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2021-01-06 17:31:36,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-01-06 17:31:36,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 109 transitions. [2021-01-06 17:31:36,767 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 109 transitions. Word has length 25 [2021-01-06 17:31:36,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:36,767 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 109 transitions. [2021-01-06 17:31:36,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 17:31:36,768 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 109 transitions. [2021-01-06 17:31:36,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 17:31:36,769 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:36,769 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:31:36,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-01-06 17:31:36,985 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:36,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:36,986 INFO L82 PathProgramCache]: Analyzing trace with hash 477321350, now seen corresponding path program 1 times [2021-01-06 17:31:36,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:36,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800097703] [2021-01-06 17:31:36,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:37,002 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:37,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [785891017] [2021-01-06 17:31:37,003 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 17:31:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:31:37,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 31 conjunts are in the unsatisfiable core [2021-01-06 17:31:37,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:37,180 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:31:37,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800097703] [2021-01-06 17:31:37,181 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:37,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785891017] [2021-01-06 17:31:37,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:31:37,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:31:37,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019301154] [2021-01-06 17:31:37,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:31:37,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:37,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:31:37,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:31:37,183 INFO L87 Difference]: Start difference. First operand 96 states and 109 transitions. Second operand 8 states. [2021-01-06 17:31:37,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:37,503 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2021-01-06 17:31:37,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:31:37,508 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2021-01-06 17:31:37,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:37,509 INFO L225 Difference]: With dead ends: 116 [2021-01-06 17:31:37,509 INFO L226 Difference]: Without dead ends: 106 [2021-01-06 17:31:37,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:31:37,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-01-06 17:31:37,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2021-01-06 17:31:37,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2021-01-06 17:31:37,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 117 transitions. [2021-01-06 17:31:37,523 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 117 transitions. Word has length 29 [2021-01-06 17:31:37,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:37,524 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 117 transitions. [2021-01-06 17:31:37,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:31:37,524 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 117 transitions. [2021-01-06 17:31:37,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 17:31:37,525 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:37,525 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:31:37,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:31:37,739 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:37,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:37,740 INFO L82 PathProgramCache]: Analyzing trace with hash 219215494, now seen corresponding path program 2 times [2021-01-06 17:31:37,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:37,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546250002] [2021-01-06 17:31:37,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:37,753 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:37,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [268668665] [2021-01-06 17:31:37,753 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 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 17:31:37,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:31:37,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:31:37,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 33 conjunts are in the unsatisfiable core [2021-01-06 17:31:37,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:37,951 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:31:37,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546250002] [2021-01-06 17:31:37,952 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:37,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268668665] [2021-01-06 17:31:37,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:31:37,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:31:37,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397544715] [2021-01-06 17:31:37,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:31:37,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:37,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:31:37,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:31:37,954 INFO L87 Difference]: Start difference. First operand 103 states and 117 transitions. Second operand 8 states. [2021-01-06 17:31:38,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:38,341 INFO L93 Difference]: Finished difference Result 131 states and 147 transitions. [2021-01-06 17:31:38,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:31:38,342 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2021-01-06 17:31:38,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:38,343 INFO L225 Difference]: With dead ends: 131 [2021-01-06 17:31:38,343 INFO L226 Difference]: Without dead ends: 127 [2021-01-06 17:31:38,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:31:38,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-01-06 17:31:38,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 114. [2021-01-06 17:31:38,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2021-01-06 17:31:38,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2021-01-06 17:31:38,358 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 29 [2021-01-06 17:31:38,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:38,359 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2021-01-06 17:31:38,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:31:38,359 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2021-01-06 17:31:38,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 17:31:38,360 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:38,360 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:31:38,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:31:38,569 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:38,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:38,570 INFO L82 PathProgramCache]: Analyzing trace with hash -855526903, now seen corresponding path program 1 times [2021-01-06 17:31:38,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:38,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615564183] [2021-01-06 17:31:38,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:38,593 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:38,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [128938397] [2021-01-06 17:31:38,595 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 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 17:31:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:31:38,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-06 17:31:38,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:38,835 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:31:38,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615564183] [2021-01-06 17:31:38,836 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:38,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128938397] [2021-01-06 17:31:38,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:31:38,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:31:38,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468927339] [2021-01-06 17:31:38,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:31:38,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:38,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:31:38,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:31:38,838 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 8 states. [2021-01-06 17:31:39,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:39,146 INFO L93 Difference]: Finished difference Result 142 states and 160 transitions. [2021-01-06 17:31:39,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:31:39,147 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2021-01-06 17:31:39,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:39,148 INFO L225 Difference]: With dead ends: 142 [2021-01-06 17:31:39,148 INFO L226 Difference]: Without dead ends: 140 [2021-01-06 17:31:39,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:31:39,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-01-06 17:31:39,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 114. [2021-01-06 17:31:39,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2021-01-06 17:31:39,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2021-01-06 17:31:39,165 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 31 [2021-01-06 17:31:39,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:39,165 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2021-01-06 17:31:39,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:31:39,165 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2021-01-06 17:31:39,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 17:31:39,166 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:39,166 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:31:39,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-06 17:31:39,382 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:39,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:39,383 INFO L82 PathProgramCache]: Analyzing trace with hash 155590347, now seen corresponding path program 2 times [2021-01-06 17:31:39,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:39,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404938122] [2021-01-06 17:31:39,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:39,395 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:39,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1521652205] [2021-01-06 17:31:39,395 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 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 17:31:39,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:31:39,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:31:39,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 48 conjunts are in the unsatisfiable core [2021-01-06 17:31:39,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:39,743 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:31:39,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404938122] [2021-01-06 17:31:39,743 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:39,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521652205] [2021-01-06 17:31:39,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:31:39,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:31:39,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084558446] [2021-01-06 17:31:39,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:31:39,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:39,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:31:39,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:31:39,745 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand 11 states. [2021-01-06 17:31:40,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:40,250 INFO L93 Difference]: Finished difference Result 148 states and 166 transitions. [2021-01-06 17:31:40,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:31:40,250 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2021-01-06 17:31:40,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:40,251 INFO L225 Difference]: With dead ends: 148 [2021-01-06 17:31:40,251 INFO L226 Difference]: Without dead ends: 146 [2021-01-06 17:31:40,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:31:40,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-01-06 17:31:40,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 118. [2021-01-06 17:31:40,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2021-01-06 17:31:40,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 134 transitions. [2021-01-06 17:31:40,266 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 134 transitions. Word has length 31 [2021-01-06 17:31:40,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:40,266 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 134 transitions. [2021-01-06 17:31:40,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 17:31:40,267 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 134 transitions. [2021-01-06 17:31:40,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 17:31:40,267 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:40,267 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:31:40,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-01-06 17:31:40,476 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:40,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:40,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1663177194, now seen corresponding path program 2 times [2021-01-06 17:31:40,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:40,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314566891] [2021-01-06 17:31:40,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:40,488 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:40,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [945165390] [2021-01-06 17:31:40,489 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 17:31:40,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:31:40,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:31:40,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 44 conjunts are in the unsatisfiable core [2021-01-06 17:31:40,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:40,777 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:31:40,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314566891] [2021-01-06 17:31:40,778 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:40,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945165390] [2021-01-06 17:31:40,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:31:40,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:31:40,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531439206] [2021-01-06 17:31:40,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:31:40,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:40,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:31:40,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:31:40,780 INFO L87 Difference]: Start difference. First operand 118 states and 134 transitions. Second operand 9 states. [2021-01-06 17:31:41,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:41,062 INFO L93 Difference]: Finished difference Result 160 states and 180 transitions. [2021-01-06 17:31:41,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:31:41,062 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2021-01-06 17:31:41,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:41,063 INFO L225 Difference]: With dead ends: 160 [2021-01-06 17:31:41,064 INFO L226 Difference]: Without dead ends: 148 [2021-01-06 17:31:41,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:31:41,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-01-06 17:31:41,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 126. [2021-01-06 17:31:41,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2021-01-06 17:31:41,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 143 transitions. [2021-01-06 17:31:41,081 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 143 transitions. Word has length 33 [2021-01-06 17:31:41,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:41,082 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 143 transitions. [2021-01-06 17:31:41,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:31:41,082 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 143 transitions. [2021-01-06 17:31:41,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 17:31:41,083 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:41,083 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:31:41,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 17:31:41,298 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:41,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:41,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1610721748, now seen corresponding path program 1 times [2021-01-06 17:31:41,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:41,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119172422] [2021-01-06 17:31:41,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:41,309 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:41,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1547008399] [2021-01-06 17:31:41,310 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 17:31:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:31:41,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 39 conjunts are in the unsatisfiable core [2021-01-06 17:31:41,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:41,508 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:31:41,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119172422] [2021-01-06 17:31:41,508 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:41,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547008399] [2021-01-06 17:31:41,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:31:41,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:31:41,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631618446] [2021-01-06 17:31:41,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:31:41,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:41,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:31:41,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:31:41,510 INFO L87 Difference]: Start difference. First operand 126 states and 143 transitions. Second operand 8 states. [2021-01-06 17:31:41,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:41,824 INFO L93 Difference]: Finished difference Result 159 states and 177 transitions. [2021-01-06 17:31:41,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:31:41,825 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2021-01-06 17:31:41,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:41,826 INFO L225 Difference]: With dead ends: 159 [2021-01-06 17:31:41,826 INFO L226 Difference]: Without dead ends: 147 [2021-01-06 17:31:41,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:31:41,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-01-06 17:31:41,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 119. [2021-01-06 17:31:41,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2021-01-06 17:31:41,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 134 transitions. [2021-01-06 17:31:41,854 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 134 transitions. Word has length 33 [2021-01-06 17:31:41,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:41,855 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 134 transitions. [2021-01-06 17:31:41,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:31:41,855 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 134 transitions. [2021-01-06 17:31:41,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 17:31:41,856 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:41,856 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:31:42,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:31:42,070 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:42,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:42,071 INFO L82 PathProgramCache]: Analyzing trace with hash 130855945, now seen corresponding path program 3 times [2021-01-06 17:31:42,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:42,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797269168] [2021-01-06 17:31:42,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:42,082 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:42,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1772524609] [2021-01-06 17:31:42,083 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 17:31:42,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 17:31:42,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:31:42,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 50 conjunts are in the unsatisfiable core [2021-01-06 17:31:42,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:42,503 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:31:42,513 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:31:42,519 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 17:31:47,755 WARN L197 SmtUtils]: Spent 4.08 s on a formula simplification that was a NOOP. DAG size: 29 [2021-01-06 17:31:47,805 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 17:31:47,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797269168] [2021-01-06 17:31:47,805 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:47,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772524609] [2021-01-06 17:31:47,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:31:47,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-01-06 17:31:47,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74373650] [2021-01-06 17:31:47,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 17:31:47,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:47,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 17:31:47,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=212, Unknown=1, NotChecked=0, Total=272 [2021-01-06 17:31:47,807 INFO L87 Difference]: Start difference. First operand 119 states and 134 transitions. Second operand 17 states. [2021-01-06 17:31:48,246 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 35 [2021-01-06 17:31:50,274 WARN L197 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2021-01-06 17:31:50,473 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 37 [2021-01-06 17:32:00,975 WARN L197 SmtUtils]: Spent 6.33 s on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2021-01-06 17:32:10,975 WARN L197 SmtUtils]: Spent 9.87 s on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2021-01-06 17:32:13,066 WARN L197 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2021-01-06 17:32:14,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:14,525 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2021-01-06 17:32:14,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 17:32:14,526 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 37 [2021-01-06 17:32:14,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:14,527 INFO L225 Difference]: With dead ends: 172 [2021-01-06 17:32:14,528 INFO L226 Difference]: Without dead ends: 162 [2021-01-06 17:32:14,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 25.8s TimeCoverageRelationStatistics Valid=191, Invalid=510, Unknown=1, NotChecked=0, Total=702 [2021-01-06 17:32:14,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-01-06 17:32:14,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 130. [2021-01-06 17:32:14,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2021-01-06 17:32:14,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2021-01-06 17:32:14,550 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 37 [2021-01-06 17:32:14,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:14,550 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2021-01-06 17:32:14,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 17:32:14,551 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2021-01-06 17:32:14,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 17:32:14,551 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:14,551 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:14,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-06 17:32:14,753 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:14,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:14,754 INFO L82 PathProgramCache]: Analyzing trace with hash -127249911, now seen corresponding path program 4 times [2021-01-06 17:32:14,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:14,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905215503] [2021-01-06 17:32:14,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:14,769 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:14,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063087233] [2021-01-06 17:32:14,770 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 17:32:14,846 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 17:32:14,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:32:14,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-06 17:32:14,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:15,058 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:32:15,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905215503] [2021-01-06 17:32:15,059 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:15,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063087233] [2021-01-06 17:32:15,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:32:15,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:32:15,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557408001] [2021-01-06 17:32:15,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:32:15,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:15,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:32:15,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:32:15,061 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand 9 states. [2021-01-06 17:32:15,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:15,559 INFO L93 Difference]: Finished difference Result 162 states and 183 transitions. [2021-01-06 17:32:15,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 17:32:15,560 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2021-01-06 17:32:15,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:15,562 INFO L225 Difference]: With dead ends: 162 [2021-01-06 17:32:15,562 INFO L226 Difference]: Without dead ends: 158 [2021-01-06 17:32:15,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:32:15,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-01-06 17:32:15,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 142. [2021-01-06 17:32:15,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2021-01-06 17:32:15,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 162 transitions. [2021-01-06 17:32:15,597 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 162 transitions. Word has length 37 [2021-01-06 17:32:15,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:15,598 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 162 transitions. [2021-01-06 17:32:15,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:32:15,598 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 162 transitions. [2021-01-06 17:32:15,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 17:32:15,599 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:15,599 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:15,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-06 17:32:15,813 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:15,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:15,814 INFO L82 PathProgramCache]: Analyzing trace with hash -127309493, now seen corresponding path program 5 times [2021-01-06 17:32:15,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:15,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557626818] [2021-01-06 17:32:15,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:15,824 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:15,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1479534898] [2021-01-06 17:32:15,824 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2021-01-06 17:32:16,782 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-01-06 17:32:16,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:32:16,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 31 conjunts are in the unsatisfiable core [2021-01-06 17:32:16,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:16,925 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:32:16,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557626818] [2021-01-06 17:32:16,926 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:16,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479534898] [2021-01-06 17:32:16,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:32:16,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:32:16,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546402977] [2021-01-06 17:32:16,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:32:16,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:16,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:32:16,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:32:16,930 INFO L87 Difference]: Start difference. First operand 142 states and 162 transitions. Second operand 7 states. [2021-01-06 17:32:17,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:17,250 INFO L93 Difference]: Finished difference Result 162 states and 183 transitions. [2021-01-06 17:32:17,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:32:17,250 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2021-01-06 17:32:17,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:17,252 INFO L225 Difference]: With dead ends: 162 [2021-01-06 17:32:17,252 INFO L226 Difference]: Without dead ends: 152 [2021-01-06 17:32:17,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:32:17,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-01-06 17:32:17,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 142. [2021-01-06 17:32:17,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2021-01-06 17:32:17,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 162 transitions. [2021-01-06 17:32:17,274 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 162 transitions. Word has length 37 [2021-01-06 17:32:17,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:17,274 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 162 transitions. [2021-01-06 17:32:17,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:32:17,274 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 162 transitions. [2021-01-06 17:32:17,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 17:32:17,275 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:17,275 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:17,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-06 17:32:17,481 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:17,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:17,482 INFO L82 PathProgramCache]: Analyzing trace with hash 948563977, now seen corresponding path program 6 times [2021-01-06 17:32:17,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:17,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916142466] [2021-01-06 17:32:17,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:17,491 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:17,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [62215793] [2021-01-06 17:32:17,492 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:17,557 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-01-06 17:32:17,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:32:17,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 36 conjunts are in the unsatisfiable core [2021-01-06 17:32:17,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:17,735 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:32:17,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916142466] [2021-01-06 17:32:17,735 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:17,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62215793] [2021-01-06 17:32:17,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:32:17,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:32:17,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585068168] [2021-01-06 17:32:17,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:32:17,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:17,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:32:17,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:32:17,737 INFO L87 Difference]: Start difference. First operand 142 states and 162 transitions. Second operand 9 states. [2021-01-06 17:32:18,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:18,454 INFO L93 Difference]: Finished difference Result 170 states and 192 transitions. [2021-01-06 17:32:18,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:32:18,455 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2021-01-06 17:32:18,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:18,456 INFO L225 Difference]: With dead ends: 170 [2021-01-06 17:32:18,456 INFO L226 Difference]: Without dead ends: 166 [2021-01-06 17:32:18,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:32:18,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-01-06 17:32:18,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 146. [2021-01-06 17:32:18,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2021-01-06 17:32:18,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 167 transitions. [2021-01-06 17:32:18,480 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 167 transitions. Word has length 37 [2021-01-06 17:32:18,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:18,480 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 167 transitions. [2021-01-06 17:32:18,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:32:18,480 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 167 transitions. [2021-01-06 17:32:18,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 17:32:18,481 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:18,481 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:18,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:18,695 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:18,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:18,696 INFO L82 PathProgramCache]: Analyzing trace with hash 948504395, now seen corresponding path program 7 times [2021-01-06 17:32:18,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:18,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528549855] [2021-01-06 17:32:18,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:18,705 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:18,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1878748431] [2021-01-06 17:32:18,705 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:18,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 35 conjunts are in the unsatisfiable core [2021-01-06 17:32:18,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:18,917 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:32:18,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528549855] [2021-01-06 17:32:18,918 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:18,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878748431] [2021-01-06 17:32:18,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:32:18,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:32:18,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305263459] [2021-01-06 17:32:18,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:32:18,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:18,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:32:18,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:32:18,920 INFO L87 Difference]: Start difference. First operand 146 states and 167 transitions. Second operand 9 states. [2021-01-06 17:32:19,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:19,400 INFO L93 Difference]: Finished difference Result 166 states and 188 transitions. [2021-01-06 17:32:19,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 17:32:19,401 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2021-01-06 17:32:19,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:19,402 INFO L225 Difference]: With dead ends: 166 [2021-01-06 17:32:19,403 INFO L226 Difference]: Without dead ends: 156 [2021-01-06 17:32:19,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:32:19,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-01-06 17:32:19,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 138. [2021-01-06 17:32:19,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2021-01-06 17:32:19,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2021-01-06 17:32:19,426 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 37 [2021-01-06 17:32:19,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:19,426 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2021-01-06 17:32:19,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:32:19,426 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2021-01-06 17:32:19,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 17:32:19,427 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:19,427 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:19,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:19,642 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:19,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:19,643 INFO L82 PathProgramCache]: Analyzing trace with hash 690398539, now seen corresponding path program 8 times [2021-01-06 17:32:19,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:19,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552542223] [2021-01-06 17:32:19,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:19,659 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:19,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1882559677] [2021-01-06 17:32:19,660 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:19,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:32:19,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:32:19,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 35 conjunts are in the unsatisfiable core [2021-01-06 17:32:19,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:19,900 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:32:19,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552542223] [2021-01-06 17:32:19,901 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:19,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882559677] [2021-01-06 17:32:19,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:32:19,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:32:19,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790539586] [2021-01-06 17:32:19,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:32:19,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:19,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:32:19,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:32:19,903 INFO L87 Difference]: Start difference. First operand 138 states and 158 transitions. Second operand 9 states. [2021-01-06 17:32:20,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:20,590 INFO L93 Difference]: Finished difference Result 166 states and 188 transitions. [2021-01-06 17:32:20,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:32:20,590 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2021-01-06 17:32:20,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:20,592 INFO L225 Difference]: With dead ends: 166 [2021-01-06 17:32:20,592 INFO L226 Difference]: Without dead ends: 162 [2021-01-06 17:32:20,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:32:20,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-01-06 17:32:20,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 142. [2021-01-06 17:32:20,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2021-01-06 17:32:20,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 163 transitions. [2021-01-06 17:32:20,615 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 163 transitions. Word has length 37 [2021-01-06 17:32:20,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:20,615 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 163 transitions. [2021-01-06 17:32:20,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:32:20,615 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 163 transitions. [2021-01-06 17:32:20,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-01-06 17:32:20,615 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:20,616 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:20,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-01-06 17:32:20,817 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:20,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:20,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1198667980, now seen corresponding path program 2 times [2021-01-06 17:32:20,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:20,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893445093] [2021-01-06 17:32:20,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:20,827 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:20,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1733477881] [2021-01-06 17:32:20,828 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:20,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:32:20,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:32:20,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 56 conjunts are in the unsatisfiable core [2021-01-06 17:32:20,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:33,993 WARN L197 SmtUtils]: Spent 10.02 s on a formula simplification that was a NOOP. DAG size: 40 [2021-01-06 17:32:58,704 WARN L197 SmtUtils]: Spent 19.59 s on a formula simplification that was a NOOP. DAG size: 33 [2021-01-06 17:32:58,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893445093] [2021-01-06 17:32:58,716 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:58,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733477881] [2021-01-06 17:32:58,716 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2021-01-06 17:32:58,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:32:58,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-01-06 17:32:58,716 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-01-06 17:32:58,716 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 17:32:58,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-01-06 17:32:58,939 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-01-06 17:32:58,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:32:58 BoogieIcfgContainer [2021-01-06 17:32:58,940 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:32:58,940 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:32:58,940 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:32:58,940 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:32:58,941 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:31:30" (3/4) ... [2021-01-06 17:32:58,947 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 17:32:58,947 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:32:58,948 INFO L168 Benchmark]: Toolchain (without parser) took 89250.54 ms. Allocated memory was 151.0 MB in the beginning and 264.2 MB in the end (delta: 113.2 MB). Free memory was 125.7 MB in the beginning and 204.9 MB in the end (delta: -79.2 MB). Peak memory consumption was 35.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:32:58,949 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:32:58,949 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.75 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:32:58,949 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.26 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:32:58,950 INFO L168 Benchmark]: Boogie Preprocessor took 31.11 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 112.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:32:58,950 INFO L168 Benchmark]: RCFGBuilder took 470.56 ms. Allocated memory is still 151.0 MB. Free memory was 112.4 MB in the beginning and 132.2 MB in the end (delta: -19.8 MB). Peak memory consumption was 19.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:32:58,950 INFO L168 Benchmark]: TraceAbstraction took 88367.48 ms. Allocated memory was 151.0 MB in the beginning and 264.2 MB in the end (delta: 113.2 MB). Free memory was 131.6 MB in the beginning and 204.9 MB in the end (delta: -73.3 MB). Peak memory consumption was 40.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:32:58,951 INFO L168 Benchmark]: Witness Printer took 6.65 ms. Allocated memory is still 264.2 MB. Free memory is still 204.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:32:58,953 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 320.75 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 41.26 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.11 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 112.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 470.56 ms. Allocated memory is still 151.0 MB. Free memory was 112.4 MB in the beginning and 132.2 MB in the end (delta: -19.8 MB). Peak memory consumption was 19.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 88367.48 ms. Allocated memory was 151.0 MB in the beginning and 264.2 MB in the end (delta: 113.2 MB). Free memory was 131.6 MB in the beginning and 204.9 MB in the end (delta: -73.3 MB). Peak memory consumption was 40.5 MB. Max. memory is 8.0 GB. * Witness Printer took 6.65 ms. Allocated memory is still 264.2 MB. Free memory is still 204.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] long long a, b, p, q, r, s; [L20] int x, y; [L21] x = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) [L23] y = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L28] a = x [L29] b = y [L30] p = 1 [L31] q = 0 [L32] r = 0 [L33] s = 1 [L35] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L40] COND FALSE !(!(a != b)) [L43] COND FALSE !(a > b) [L48] b = b - a [L49] q = q - p [L50] s = s - r [L35] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L40] COND FALSE !(!(a != b)) [L43] COND FALSE !(a > b) [L48] b = b - a [L49] q = q - p [L50] s = s - r [L35] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L40] COND FALSE !(!(a != b)) [L43] COND TRUE a > b [L44] a = a - b [L45] p = p - q [L46] r = r - s [L35] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 88.2s, OverallIterations: 22, TraceHistogramMax: 4, AutomataDifference: 33.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 701 SDtfs, 1993 SDslu, 2167 SDs, 0 SdLazy, 3247 SolverSat, 400 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 8.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 660 GetRequests, 411 SyntacticMatches, 1 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 30.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=146occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 21 MinimizatonAttempts, 333 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 8.9s InterpolantComputationTime, 577 NumberOfCodeBlocks, 566 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 556 ConstructedInterpolants, 4 QuantifiedInterpolants, 232045 SizeOfPredicates, 218 NumberOfNonLiveVariables, 2350 ConjunctsInSsa, 655 ConjunctsInUnsatCore, 21 InterpolantComputations, 6 PerfectInterpolantSequences, 19/288 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...