/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_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:37:30,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:37:30,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:37:30,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:37:30,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:37:30,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:37:30,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:37:30,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:37:30,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:37:30,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:37:30,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:37:30,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:37:30,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:37:30,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:37:30,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:37:30,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:37:30,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:37:30,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:37:30,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:37:30,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:37:30,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:37:30,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:37:30,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:37:30,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:37:30,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:37:30,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:37:30,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:37:30,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:37:30,845 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 07:37:30,870 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:37:30,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:37:30,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:37:30,872 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:37:30,873 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:37:30,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:37:30,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:37:30,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:37:30,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:37:30,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:37:30,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:37:30,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:37:30,875 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:37:30,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:37:30,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:37:30,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:37:30,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:37:30,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:37:30,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:37:30,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:37:30,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:37:30,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:37:30,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:37:30,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:37:30,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:37:30,878 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:37:31,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:37:31,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:37:31,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:37:31,288 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:37:31,289 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:37:31,290 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c [2020-12-23 07:37:31,387 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f8948fe20/761bb52964f64d1c9cdd2330ac1a407b/FLAG7b6e4cf32 [2020-12-23 07:37:32,005 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:37:32,006 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c [2020-12-23 07:37:32,014 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f8948fe20/761bb52964f64d1c9cdd2330ac1a407b/FLAG7b6e4cf32 [2020-12-23 07:37:32,036 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f8948fe20/761bb52964f64d1c9cdd2330ac1a407b [2020-12-23 07:37:32,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:37:32,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:37:32,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:37:32,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:37:32,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:37:32,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:37:32" (1/1) ... [2020-12-23 07:37:32,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ccc03bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:32, skipping insertion in model container [2020-12-23 07:37:32,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:37:32" (1/1) ... [2020-12-23 07:37:32,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:37:32,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:37:32,240 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_valuebound5.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,] [2020-12-23 07:37:32,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:37:32,276 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:37:32,291 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_valuebound5.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,] [2020-12-23 07:37:32,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:37:32,318 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:37:32,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:32 WrapperNode [2020-12-23 07:37:32,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:37:32,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:37:32,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:37:32,321 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:37:32,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:32" (1/1) ... [2020-12-23 07:37:32,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:32" (1/1) ... [2020-12-23 07:37:32,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:37:32,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:37:32,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:37:32,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:37:32,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:32" (1/1) ... [2020-12-23 07:37:32,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:32" (1/1) ... [2020-12-23 07:37:32,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:32" (1/1) ... [2020-12-23 07:37:32,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:32" (1/1) ... [2020-12-23 07:37:32,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:32" (1/1) ... [2020-12-23 07:37:32,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:32" (1/1) ... [2020-12-23 07:37:32,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:32" (1/1) ... [2020-12-23 07:37:32,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:37:32,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:37:32,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:37:32,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:37:32,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:32" (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 [2020-12-23 07:37:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:37:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:37:32,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:37:32,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:37:33,011 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:37:33,012 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2020-12-23 07:37:33,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:37:33 BoogieIcfgContainer [2020-12-23 07:37:33,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:37:33,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:37:33,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:37:33,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:37:33,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:37:32" (1/3) ... [2020-12-23 07:37:33,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa8a1ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:37:33, skipping insertion in model container [2020-12-23 07:37:33,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:32" (2/3) ... [2020-12-23 07:37:33,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa8a1ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:37:33, skipping insertion in model container [2020-12-23 07:37:33,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:37:33" (3/3) ... [2020-12-23 07:37:33,025 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound5.c [2020-12-23 07:37:33,032 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:37:33,036 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-23 07:37:33,069 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-23 07:37:33,099 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:37:33,099 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:37:33,099 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:37:33,099 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:37:33,100 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:37:33,100 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:37:33,100 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:37:33,100 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:37:33,118 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-12-23 07:37:33,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:37:33,124 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:33,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:33,126 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]=== [2020-12-23 07:37:33,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:33,132 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2020-12-23 07:37:33,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:33,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519063483] [2020-12-23 07:37:33,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:33,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:37:33,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519063483] [2020-12-23 07:37:33,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:37:33,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:37:33,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604769753] [2020-12-23 07:37:33,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:37:33,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:33,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:37:33,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:37:33,336 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2020-12-23 07:37:33,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:33,358 INFO L93 Difference]: Finished difference Result 85 states and 112 transitions. [2020-12-23 07:37:33,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:37:33,360 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-23 07:37:33,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:33,370 INFO L225 Difference]: With dead ends: 85 [2020-12-23 07:37:33,370 INFO L226 Difference]: Without dead ends: 40 [2020-12-23 07:37:33,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:37:33,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-12-23 07:37:33,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-12-23 07:37:33,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-23 07:37:33,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-12-23 07:37:33,414 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 13 [2020-12-23 07:37:33,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:33,414 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-12-23 07:37:33,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:37:33,414 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-12-23 07:37:33,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:37:33,415 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:33,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:33,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:37:33,416 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]=== [2020-12-23 07:37:33,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:33,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2020-12-23 07:37:33,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:33,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126090978] [2020-12-23 07:37:33,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:33,443 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:33,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2079100197] [2020-12-23 07:37:33,444 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 [2020-12-23 07:37:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:33,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:37:33,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:33,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:37:33,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126090978] [2020-12-23 07:37:33,742 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:33,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079100197] [2020-12-23 07:37:33,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:37:33,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:37:33,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467730244] [2020-12-23 07:37:33,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:37:33,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:33,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:37:33,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:37:33,746 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 5 states. [2020-12-23 07:37:33,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:33,935 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-12-23 07:37:33,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:37:33,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-23 07:37:33,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:33,940 INFO L225 Difference]: With dead ends: 70 [2020-12-23 07:37:33,942 INFO L226 Difference]: Without dead ends: 66 [2020-12-23 07:37:33,944 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 [2020-12-23 07:37:33,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-23 07:37:33,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-12-23 07:37:33,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-23 07:37:33,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2020-12-23 07:37:33,968 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 13 [2020-12-23 07:37:33,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:33,969 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2020-12-23 07:37:33,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:37:33,971 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2020-12-23 07:37:33,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 07:37:33,972 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:33,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:34,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 07:37:34,188 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]=== [2020-12-23 07:37:34,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:34,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1454243009, now seen corresponding path program 1 times [2020-12-23 07:37:34,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:34,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95542272] [2020-12-23 07:37:34,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:34,226 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:34,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1868524473] [2020-12-23 07:37:34,227 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 [2020-12-23 07:37:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:34,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-23 07:37:34,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:34,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:37:34,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95542272] [2020-12-23 07:37:34,625 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:34,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868524473] [2020-12-23 07:37:34,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:37:34,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-23 07:37:34,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374096854] [2020-12-23 07:37:34,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 07:37:34,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:34,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 07:37:34,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:37:34,628 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand 12 states. [2020-12-23 07:37:35,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:35,198 INFO L93 Difference]: Finished difference Result 98 states and 112 transitions. [2020-12-23 07:37:35,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:37:35,198 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-12-23 07:37:35,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:35,202 INFO L225 Difference]: With dead ends: 98 [2020-12-23 07:37:35,202 INFO L226 Difference]: Without dead ends: 96 [2020-12-23 07:37:35,203 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 [2020-12-23 07:37:35,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-12-23 07:37:35,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 70. [2020-12-23 07:37:35,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-23 07:37:35,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2020-12-23 07:37:35,219 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 15 [2020-12-23 07:37:35,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:35,220 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2020-12-23 07:37:35,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 07:37:35,220 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2020-12-23 07:37:35,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 07:37:35,221 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:35,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:37:35,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:35,437 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]=== [2020-12-23 07:37:35,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:35,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1663317220, now seen corresponding path program 1 times [2020-12-23 07:37:35,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:35,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105356101] [2020-12-23 07:37:35,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:35,471 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:35,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1026978547] [2020-12-23 07:37:35,479 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 [2020-12-23 07:37:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:35,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 07:37:35,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:35,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:37:35,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105356101] [2020-12-23 07:37:35,665 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:35,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026978547] [2020-12-23 07:37:35,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:37:35,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 07:37:35,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333318908] [2020-12-23 07:37:35,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:37:35,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:35,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:37:35,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:37:35,668 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand 8 states. [2020-12-23 07:37:35,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:35,912 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-12-23 07:37:35,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:37:35,912 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-12-23 07:37:35,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:35,914 INFO L225 Difference]: With dead ends: 84 [2020-12-23 07:37:35,914 INFO L226 Difference]: Without dead ends: 76 [2020-12-23 07:37:35,915 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 [2020-12-23 07:37:35,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-23 07:37:35,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2020-12-23 07:37:35,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-23 07:37:35,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 79 transitions. [2020-12-23 07:37:35,932 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 79 transitions. Word has length 17 [2020-12-23 07:37:35,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:35,932 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 79 transitions. [2020-12-23 07:37:35,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:37:35,932 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 79 transitions. [2020-12-23 07:37:35,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 07:37:35,933 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:35,933 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] [2020-12-23 07:37:36,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:36,135 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]=== [2020-12-23 07:37:36,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:36,136 INFO L82 PathProgramCache]: Analyzing trace with hash 850548497, now seen corresponding path program 1 times [2020-12-23 07:37:36,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:36,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477843119] [2020-12-23 07:37:36,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:36,152 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:36,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [49584014] [2020-12-23 07:37:36,152 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 [2020-12-23 07:37:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:36,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 07:37:36,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:36,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:37:36,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477843119] [2020-12-23 07:37:36,228 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:36,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49584014] [2020-12-23 07:37:36,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:37:36,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:37:36,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774175535] [2020-12-23 07:37:36,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:37:36,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:36,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:37:36,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:37:36,230 INFO L87 Difference]: Start difference. First operand 68 states and 79 transitions. Second operand 4 states. [2020-12-23 07:37:36,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:36,282 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2020-12-23 07:37:36,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:37:36,282 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-12-23 07:37:36,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:36,284 INFO L225 Difference]: With dead ends: 68 [2020-12-23 07:37:36,284 INFO L226 Difference]: Without dead ends: 66 [2020-12-23 07:37:36,284 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 [2020-12-23 07:37:36,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-23 07:37:36,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-23 07:37:36,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-23 07:37:36,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2020-12-23 07:37:36,294 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 20 [2020-12-23 07:37:36,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:36,295 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2020-12-23 07:37:36,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:37:36,295 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2020-12-23 07:37:36,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 07:37:36,296 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:36,296 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] [2020-12-23 07:37:36,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:36,512 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]=== [2020-12-23 07:37:36,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:36,514 INFO L82 PathProgramCache]: Analyzing trace with hash 598848193, now seen corresponding path program 1 times [2020-12-23 07:37:36,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:36,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349092612] [2020-12-23 07:37:36,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:36,531 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:36,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [319622664] [2020-12-23 07:37:36,532 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:36,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 07:37:36,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:36,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 07:37:36,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349092612] [2020-12-23 07:37:36,692 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:36,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319622664] [2020-12-23 07:37:36,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:37:36,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:37:36,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275977229] [2020-12-23 07:37:36,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:37:36,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:36,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:37:36,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:37:36,696 INFO L87 Difference]: Start difference. First operand 66 states and 76 transitions. Second operand 5 states. [2020-12-23 07:37:36,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:36,806 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2020-12-23 07:37:36,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:37:36,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-12-23 07:37:36,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:36,808 INFO L225 Difference]: With dead ends: 88 [2020-12-23 07:37:36,808 INFO L226 Difference]: Without dead ends: 84 [2020-12-23 07:37:36,809 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 [2020-12-23 07:37:36,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-23 07:37:36,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 72. [2020-12-23 07:37:36,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-23 07:37:36,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2020-12-23 07:37:36,820 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 21 [2020-12-23 07:37:36,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:36,820 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2020-12-23 07:37:36,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:37:36,820 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2020-12-23 07:37:36,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 07:37:36,821 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:36,821 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] [2020-12-23 07:37:37,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-23 07:37:37,031 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]=== [2020-12-23 07:37:37,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:37,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1333477300, now seen corresponding path program 1 times [2020-12-23 07:37:37,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:37,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016739294] [2020-12-23 07:37:37,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:37,049 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:37,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [70070259] [2020-12-23 07:37:37,050 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 [2020-12-23 07:37:37,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:37,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-23 07:37:37,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:37,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:37:37,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016739294] [2020-12-23 07:37:37,219 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:37,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70070259] [2020-12-23 07:37:37,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:37:37,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 07:37:37,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020900652] [2020-12-23 07:37:37,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:37:37,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:37,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:37:37,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:37:37,222 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand 8 states. [2020-12-23 07:37:37,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:37,415 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-12-23 07:37:37,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:37:37,416 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-12-23 07:37:37,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:37,417 INFO L225 Difference]: With dead ends: 80 [2020-12-23 07:37:37,417 INFO L226 Difference]: Without dead ends: 72 [2020-12-23 07:37:37,418 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 [2020-12-23 07:37:37,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-23 07:37:37,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-12-23 07:37:37,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-23 07:37:37,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-12-23 07:37:37,430 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 22 [2020-12-23 07:37:37,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:37,431 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-12-23 07:37:37,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:37:37,431 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-12-23 07:37:37,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 07:37:37,432 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:37,432 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] [2020-12-23 07:37:37,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:37,639 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]=== [2020-12-23 07:37:37,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:37,640 INFO L82 PathProgramCache]: Analyzing trace with hash -89606074, now seen corresponding path program 1 times [2020-12-23 07:37:37,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:37,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676778385] [2020-12-23 07:37:37,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:37,659 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:37,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1995137511] [2020-12-23 07:37:37,659 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 [2020-12-23 07:37:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:37,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-23 07:37:37,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:37,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:37:37,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676778385] [2020-12-23 07:37:37,898 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:37,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995137511] [2020-12-23 07:37:37,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:37:37,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:37:37,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017539951] [2020-12-23 07:37:37,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:37:37,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:37,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:37:37,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:37:37,900 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 9 states. [2020-12-23 07:37:38,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:38,365 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2020-12-23 07:37:38,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:37:38,365 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-12-23 07:37:38,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:38,366 INFO L225 Difference]: With dead ends: 105 [2020-12-23 07:37:38,368 INFO L226 Difference]: Without dead ends: 103 [2020-12-23 07:37:38,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-12-23 07:37:38,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-23 07:37:38,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 74. [2020-12-23 07:37:38,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-23 07:37:38,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2020-12-23 07:37:38,403 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 23 [2020-12-23 07:37:38,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:38,405 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2020-12-23 07:37:38,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:37:38,405 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2020-12-23 07:37:38,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 07:37:38,406 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:38,406 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] [2020-12-23 07:37:38,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:38,623 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]=== [2020-12-23 07:37:38,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:38,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1021281049, now seen corresponding path program 1 times [2020-12-23 07:37:38,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:38,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168595229] [2020-12-23 07:37:38,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:38,640 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:38,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [640324110] [2020-12-23 07:37:38,643 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 [2020-12-23 07:37:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:38,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 45 conjunts are in the unsatisfiable core [2020-12-23 07:37:38,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:38,948 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:37:38,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168595229] [2020-12-23 07:37:38,949 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:38,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640324110] [2020-12-23 07:37:38,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:37:38,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:37:38,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117155307] [2020-12-23 07:37:38,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:37:38,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:38,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:37:38,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:37:38,957 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 11 states. [2020-12-23 07:37:39,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:39,363 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2020-12-23 07:37:39,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 07:37:39,364 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-12-23 07:37:39,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:39,366 INFO L225 Difference]: With dead ends: 118 [2020-12-23 07:37:39,366 INFO L226 Difference]: Without dead ends: 104 [2020-12-23 07:37:39,366 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 [2020-12-23 07:37:39,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-23 07:37:39,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2020-12-23 07:37:39,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-23 07:37:39,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 109 transitions. [2020-12-23 07:37:39,391 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 109 transitions. Word has length 25 [2020-12-23 07:37:39,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:39,391 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 109 transitions. [2020-12-23 07:37:39,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:37:39,391 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 109 transitions. [2020-12-23 07:37:39,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 07:37:39,400 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:39,400 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] [2020-12-23 07:37:39,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-23 07:37:39,615 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]=== [2020-12-23 07:37:39,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:39,616 INFO L82 PathProgramCache]: Analyzing trace with hash 477321350, now seen corresponding path program 1 times [2020-12-23 07:37:39,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:39,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500428274] [2020-12-23 07:37:39,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:39,634 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:39,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1077050634] [2020-12-23 07:37:39,634 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 [2020-12-23 07:37:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:39,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-23 07:37:39,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:39,805 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:37:39,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500428274] [2020-12-23 07:37:39,806 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:39,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077050634] [2020-12-23 07:37:39,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:37:39,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:37:39,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753874229] [2020-12-23 07:37:39,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:37:39,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:39,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:37:39,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:37:39,808 INFO L87 Difference]: Start difference. First operand 96 states and 109 transitions. Second operand 8 states. [2020-12-23 07:37:40,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:40,069 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2020-12-23 07:37:40,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:37:40,070 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-12-23 07:37:40,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:40,071 INFO L225 Difference]: With dead ends: 116 [2020-12-23 07:37:40,071 INFO L226 Difference]: Without dead ends: 106 [2020-12-23 07:37:40,071 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 [2020-12-23 07:37:40,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-23 07:37:40,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2020-12-23 07:37:40,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-12-23 07:37:40,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 117 transitions. [2020-12-23 07:37:40,083 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 117 transitions. Word has length 29 [2020-12-23 07:37:40,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:40,083 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 117 transitions. [2020-12-23 07:37:40,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:37:40,083 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 117 transitions. [2020-12-23 07:37:40,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 07:37:40,084 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:40,084 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] [2020-12-23 07:37:40,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:40,299 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]=== [2020-12-23 07:37:40,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:40,300 INFO L82 PathProgramCache]: Analyzing trace with hash 219215494, now seen corresponding path program 2 times [2020-12-23 07:37:40,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:40,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332163399] [2020-12-23 07:37:40,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:40,314 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:40,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067453610] [2020-12-23 07:37:40,314 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 [2020-12-23 07:37:40,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:37:40,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:37:40,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-23 07:37:40,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:40,547 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:37:40,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332163399] [2020-12-23 07:37:40,548 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:40,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067453610] [2020-12-23 07:37:40,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:37:40,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:37:40,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761310783] [2020-12-23 07:37:40,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:37:40,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:40,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:37:40,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:37:40,550 INFO L87 Difference]: Start difference. First operand 103 states and 117 transitions. Second operand 8 states. [2020-12-23 07:37:40,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:40,974 INFO L93 Difference]: Finished difference Result 131 states and 147 transitions. [2020-12-23 07:37:40,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:37:40,975 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-12-23 07:37:40,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:40,976 INFO L225 Difference]: With dead ends: 131 [2020-12-23 07:37:40,976 INFO L226 Difference]: Without dead ends: 127 [2020-12-23 07:37:40,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:37:40,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-23 07:37:40,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 114. [2020-12-23 07:37:40,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-12-23 07:37:40,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2020-12-23 07:37:40,990 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 29 [2020-12-23 07:37:40,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:40,991 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2020-12-23 07:37:40,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:37:40,991 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2020-12-23 07:37:40,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:37:40,992 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:40,992 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] [2020-12-23 07:37:41,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:41,206 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]=== [2020-12-23 07:37:41,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:41,207 INFO L82 PathProgramCache]: Analyzing trace with hash -855526903, now seen corresponding path program 1 times [2020-12-23 07:37:41,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:41,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351234227] [2020-12-23 07:37:41,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:41,219 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:41,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [143260334] [2020-12-23 07:37:41,220 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 [2020-12-23 07:37:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:41,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 07:37:41,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:41,435 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:37:41,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351234227] [2020-12-23 07:37:41,435 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:41,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143260334] [2020-12-23 07:37:41,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:37:41,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:37:41,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620472961] [2020-12-23 07:37:41,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:37:41,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:41,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:37:41,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:37:41,438 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 8 states. [2020-12-23 07:37:41,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:41,753 INFO L93 Difference]: Finished difference Result 142 states and 160 transitions. [2020-12-23 07:37:41,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:37:41,753 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-23 07:37:41,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:41,756 INFO L225 Difference]: With dead ends: 142 [2020-12-23 07:37:41,756 INFO L226 Difference]: Without dead ends: 140 [2020-12-23 07:37:41,757 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 [2020-12-23 07:37:41,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-23 07:37:41,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 114. [2020-12-23 07:37:41,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-12-23 07:37:41,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2020-12-23 07:37:41,776 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 31 [2020-12-23 07:37:41,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:41,777 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2020-12-23 07:37:41,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:37:41,777 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2020-12-23 07:37:41,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:37:41,778 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:41,778 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] [2020-12-23 07:37:41,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-23 07:37:41,990 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]=== [2020-12-23 07:37:41,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:41,991 INFO L82 PathProgramCache]: Analyzing trace with hash 155590347, now seen corresponding path program 2 times [2020-12-23 07:37:41,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:41,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862354496] [2020-12-23 07:37:41,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:42,005 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:42,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1624960494] [2020-12-23 07:37:42,005 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 [2020-12-23 07:37:42,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:37:42,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:37:42,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 48 conjunts are in the unsatisfiable core [2020-12-23 07:37:42,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:42,339 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:37:42,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862354496] [2020-12-23 07:37:42,340 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:42,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624960494] [2020-12-23 07:37:42,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:37:42,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:37:42,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843117244] [2020-12-23 07:37:42,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:37:42,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:42,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:37:42,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:37:42,347 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand 11 states. [2020-12-23 07:37:42,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:42,866 INFO L93 Difference]: Finished difference Result 148 states and 166 transitions. [2020-12-23 07:37:42,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:37:42,866 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-12-23 07:37:42,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:42,868 INFO L225 Difference]: With dead ends: 148 [2020-12-23 07:37:42,868 INFO L226 Difference]: Without dead ends: 146 [2020-12-23 07:37:42,868 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 [2020-12-23 07:37:42,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-12-23 07:37:42,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 118. [2020-12-23 07:37:42,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-12-23 07:37:42,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 134 transitions. [2020-12-23 07:37:42,898 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 134 transitions. Word has length 31 [2020-12-23 07:37:42,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:42,900 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 134 transitions. [2020-12-23 07:37:42,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:37:42,900 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 134 transitions. [2020-12-23 07:37:42,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:37:42,900 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:42,901 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] [2020-12-23 07:37:43,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 07:37:43,114 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]=== [2020-12-23 07:37:43,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:43,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1663177194, now seen corresponding path program 2 times [2020-12-23 07:37:43,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:43,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116295006] [2020-12-23 07:37:43,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:43,127 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:43,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [20835293] [2020-12-23 07:37:43,128 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 [2020-12-23 07:37:43,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:37:43,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:37:43,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 57 conjunts are in the unsatisfiable core [2020-12-23 07:37:43,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:43,671 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:37:43,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116295006] [2020-12-23 07:37:43,671 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:43,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20835293] [2020-12-23 07:37:43,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:37:43,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-12-23 07:37:43,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432826894] [2020-12-23 07:37:43,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-23 07:37:43,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:43,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-23 07:37:43,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-12-23 07:37:43,674 INFO L87 Difference]: Start difference. First operand 118 states and 134 transitions. Second operand 14 states. [2020-12-23 07:37:44,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:44,134 INFO L93 Difference]: Finished difference Result 160 states and 180 transitions. [2020-12-23 07:37:44,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:37:44,135 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 33 [2020-12-23 07:37:44,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:44,136 INFO L225 Difference]: With dead ends: 160 [2020-12-23 07:37:44,136 INFO L226 Difference]: Without dead ends: 148 [2020-12-23 07:37:44,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2020-12-23 07:37:44,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-12-23 07:37:44,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 126. [2020-12-23 07:37:44,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-12-23 07:37:44,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 143 transitions. [2020-12-23 07:37:44,174 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 143 transitions. Word has length 33 [2020-12-23 07:37:44,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:44,174 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 143 transitions. [2020-12-23 07:37:44,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-23 07:37:44,175 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 143 transitions. [2020-12-23 07:37:44,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:37:44,175 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:44,175 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] [2020-12-23 07:37:44,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 07:37:44,389 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]=== [2020-12-23 07:37:44,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:44,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1610721748, now seen corresponding path program 1 times [2020-12-23 07:37:44,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:44,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244946923] [2020-12-23 07:37:44,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:44,403 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:44,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1186965971] [2020-12-23 07:37:44,404 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 [2020-12-23 07:37:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:37:44,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-23 07:37:44,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:44,609 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:37:44,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244946923] [2020-12-23 07:37:44,610 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:44,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186965971] [2020-12-23 07:37:44,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:37:44,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:37:44,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989191525] [2020-12-23 07:37:44,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:37:44,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:44,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:37:44,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:37:44,612 INFO L87 Difference]: Start difference. First operand 126 states and 143 transitions. Second operand 8 states. [2020-12-23 07:37:44,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:37:44,937 INFO L93 Difference]: Finished difference Result 159 states and 177 transitions. [2020-12-23 07:37:44,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:37:44,938 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-12-23 07:37:44,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:37:44,939 INFO L225 Difference]: With dead ends: 159 [2020-12-23 07:37:44,939 INFO L226 Difference]: Without dead ends: 147 [2020-12-23 07:37:44,942 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 [2020-12-23 07:37:44,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-12-23 07:37:44,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 119. [2020-12-23 07:37:44,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-12-23 07:37:44,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 134 transitions. [2020-12-23 07:37:44,961 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 134 transitions. Word has length 33 [2020-12-23 07:37:44,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:37:44,961 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 134 transitions. [2020-12-23 07:37:44,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:37:44,961 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 134 transitions. [2020-12-23 07:37:44,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:37:44,963 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:37:44,963 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] [2020-12-23 07:37:45,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:37:45,177 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]=== [2020-12-23 07:37:45,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:37:45,178 INFO L82 PathProgramCache]: Analyzing trace with hash 130855945, now seen corresponding path program 3 times [2020-12-23 07:37:45,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:37:45,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087386664] [2020-12-23 07:37:45,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:37:45,192 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:37:45,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903804553] [2020-12-23 07:37:45,192 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 [2020-12-23 07:37:45,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 07:37:45,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:37:45,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 50 conjunts are in the unsatisfiable core [2020-12-23 07:37:45,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:37:45,597 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:37:45,610 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:37:45,616 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 07:37:51,302 WARN L197 SmtUtils]: Spent 4.66 s on a formula simplification that was a NOOP. DAG size: 29 [2020-12-23 07:37:51,355 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 07:37:51,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087386664] [2020-12-23 07:37:51,355 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:37:51,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903804553] [2020-12-23 07:37:51,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:37:51,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-12-23 07:37:51,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695520646] [2020-12-23 07:37:51,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-23 07:37:51,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:37:51,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-23 07:37:51,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=212, Unknown=1, NotChecked=0, Total=272 [2020-12-23 07:37:51,357 INFO L87 Difference]: Start difference. First operand 119 states and 134 transitions. Second operand 17 states. [2020-12-23 07:37:53,935 WARN L197 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 59 DAG size of output: 35 [2020-12-23 07:37:55,301 WARN L197 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-12-23 07:37:56,127 WARN L197 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 37 [2020-12-23 07:38:00,842 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 28 [2020-12-23 07:38:08,327 WARN L197 SmtUtils]: Spent 7.45 s on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2020-12-23 07:38:15,070 WARN L197 SmtUtils]: Spent 6.64 s on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2020-12-23 07:38:18,878 WARN L197 SmtUtils]: Spent 2.71 s on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-12-23 07:38:20,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:38:20,374 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2020-12-23 07:38:20,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:38:20,375 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 37 [2020-12-23 07:38:20,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:38:20,376 INFO L225 Difference]: With dead ends: 172 [2020-12-23 07:38:20,376 INFO L226 Difference]: Without dead ends: 162 [2020-12-23 07:38:20,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 28.6s TimeCoverageRelationStatistics Valid=191, Invalid=508, Unknown=3, NotChecked=0, Total=702 [2020-12-23 07:38:20,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-23 07:38:20,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 130. [2020-12-23 07:38:20,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-23 07:38:20,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2020-12-23 07:38:20,400 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 37 [2020-12-23 07:38:20,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:38:20,400 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2020-12-23 07:38:20,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-23 07:38:20,400 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2020-12-23 07:38:20,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:38:20,401 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:20,401 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] [2020-12-23 07:38:20,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-23 07:38:20,615 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]=== [2020-12-23 07:38:20,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:20,616 INFO L82 PathProgramCache]: Analyzing trace with hash -127249911, now seen corresponding path program 4 times [2020-12-23 07:38:20,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:20,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810020483] [2020-12-23 07:38:20,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:20,629 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:20,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [594709955] [2020-12-23 07:38:20,629 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 [2020-12-23 07:38:20,671 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 07:38:20,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:38:20,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 07:38:20,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:38:20,862 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:38:20,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810020483] [2020-12-23 07:38:20,862 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:38:20,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594709955] [2020-12-23 07:38:20,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:38:20,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:38:20,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152636324] [2020-12-23 07:38:20,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:38:20,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:38:20,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:38:20,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:38:20,864 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand 9 states. [2020-12-23 07:38:21,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:38:21,469 INFO L93 Difference]: Finished difference Result 162 states and 183 transitions. [2020-12-23 07:38:21,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 07:38:21,472 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-12-23 07:38:21,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:38:21,473 INFO L225 Difference]: With dead ends: 162 [2020-12-23 07:38:21,473 INFO L226 Difference]: Without dead ends: 158 [2020-12-23 07:38:21,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:38:21,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-12-23 07:38:21,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 142. [2020-12-23 07:38:21,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-23 07:38:21,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 162 transitions. [2020-12-23 07:38:21,501 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 162 transitions. Word has length 37 [2020-12-23 07:38:21,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:38:21,504 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 162 transitions. [2020-12-23 07:38:21,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:38:21,504 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 162 transitions. [2020-12-23 07:38:21,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:38:21,504 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:21,505 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] [2020-12-23 07:38:21,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-23 07:38:21,718 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]=== [2020-12-23 07:38:21,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:21,719 INFO L82 PathProgramCache]: Analyzing trace with hash -127309493, now seen corresponding path program 5 times [2020-12-23 07:38:21,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:21,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970746626] [2020-12-23 07:38:21,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:21,736 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:21,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [754477556] [2020-12-23 07:38:21,737 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 [2020-12-23 07:38:22,695 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-12-23 07:38:22,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:38:22,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-23 07:38:22,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:38:22,835 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:38:22,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970746626] [2020-12-23 07:38:22,836 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:38:22,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754477556] [2020-12-23 07:38:22,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:38:22,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:38:22,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411121170] [2020-12-23 07:38:22,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:38:22,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:38:22,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:38:22,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:38:22,837 INFO L87 Difference]: Start difference. First operand 142 states and 162 transitions. Second operand 7 states. [2020-12-23 07:38:23,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:38:23,179 INFO L93 Difference]: Finished difference Result 162 states and 183 transitions. [2020-12-23 07:38:23,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:38:23,179 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-12-23 07:38:23,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:38:23,181 INFO L225 Difference]: With dead ends: 162 [2020-12-23 07:38:23,181 INFO L226 Difference]: Without dead ends: 152 [2020-12-23 07:38:23,181 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 [2020-12-23 07:38:23,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-12-23 07:38:23,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 142. [2020-12-23 07:38:23,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-23 07:38:23,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 162 transitions. [2020-12-23 07:38:23,204 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 162 transitions. Word has length 37 [2020-12-23 07:38:23,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:38:23,205 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 162 transitions. [2020-12-23 07:38:23,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:38:23,205 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 162 transitions. [2020-12-23 07:38:23,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:38:23,205 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:23,206 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] [2020-12-23 07:38:23,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-23 07:38:23,414 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]=== [2020-12-23 07:38:23,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:23,415 INFO L82 PathProgramCache]: Analyzing trace with hash 948563977, now seen corresponding path program 6 times [2020-12-23 07:38:23,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:23,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543878359] [2020-12-23 07:38:23,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:23,424 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:23,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1411040314] [2020-12-23 07:38:23,425 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 [2020-12-23 07:38:23,487 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-12-23 07:38:23,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:38:23,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-23 07:38:23,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:38:23,698 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:38:23,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543878359] [2020-12-23 07:38:23,699 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:38:23,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411040314] [2020-12-23 07:38:23,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:38:23,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:38:23,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698254629] [2020-12-23 07:38:23,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:38:23,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:38:23,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:38:23,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:38:23,701 INFO L87 Difference]: Start difference. First operand 142 states and 162 transitions. Second operand 9 states. [2020-12-23 07:38:24,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:38:24,470 INFO L93 Difference]: Finished difference Result 170 states and 192 transitions. [2020-12-23 07:38:24,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:38:24,472 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-12-23 07:38:24,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:38:24,474 INFO L225 Difference]: With dead ends: 170 [2020-12-23 07:38:24,474 INFO L226 Difference]: Without dead ends: 166 [2020-12-23 07:38:24,475 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 [2020-12-23 07:38:24,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-12-23 07:38:24,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 146. [2020-12-23 07:38:24,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-12-23 07:38:24,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 167 transitions. [2020-12-23 07:38:24,500 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 167 transitions. Word has length 37 [2020-12-23 07:38:24,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:38:24,500 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 167 transitions. [2020-12-23 07:38:24,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:38:24,500 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 167 transitions. [2020-12-23 07:38:24,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:38:24,501 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:24,501 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] [2020-12-23 07:38:24,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:38:24,715 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]=== [2020-12-23 07:38:24,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:24,715 INFO L82 PathProgramCache]: Analyzing trace with hash 948504395, now seen corresponding path program 7 times [2020-12-23 07:38:24,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:24,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818751264] [2020-12-23 07:38:24,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:24,725 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:24,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1910954788] [2020-12-23 07:38:24,726 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 [2020-12-23 07:38:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:38:24,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-23 07:38:24,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:38:24,964 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:38:24,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818751264] [2020-12-23 07:38:24,965 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:38:24,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910954788] [2020-12-23 07:38:24,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:38:24,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:38:24,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506244847] [2020-12-23 07:38:24,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:38:24,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:38:24,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:38:24,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:38:24,967 INFO L87 Difference]: Start difference. First operand 146 states and 167 transitions. Second operand 9 states. [2020-12-23 07:38:25,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:38:25,510 INFO L93 Difference]: Finished difference Result 166 states and 188 transitions. [2020-12-23 07:38:25,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 07:38:25,510 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-12-23 07:38:25,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:38:25,511 INFO L225 Difference]: With dead ends: 166 [2020-12-23 07:38:25,511 INFO L226 Difference]: Without dead ends: 156 [2020-12-23 07:38:25,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:38:25,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-12-23 07:38:25,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 138. [2020-12-23 07:38:25,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-12-23 07:38:25,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2020-12-23 07:38:25,534 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 37 [2020-12-23 07:38:25,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:38:25,534 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2020-12-23 07:38:25,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:38:25,534 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2020-12-23 07:38:25,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:38:25,535 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:25,535 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] [2020-12-23 07:38:25,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:38:25,750 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]=== [2020-12-23 07:38:25,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:25,750 INFO L82 PathProgramCache]: Analyzing trace with hash 690398539, now seen corresponding path program 8 times [2020-12-23 07:38:25,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:25,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131683717] [2020-12-23 07:38:25,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:25,762 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:25,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1492094950] [2020-12-23 07:38:25,763 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 [2020-12-23 07:38:25,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:38:25,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:38:25,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-23 07:38:25,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:38:25,992 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:38:25,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131683717] [2020-12-23 07:38:25,992 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:38:25,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492094950] [2020-12-23 07:38:25,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:38:25,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:38:25,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880807458] [2020-12-23 07:38:25,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:38:25,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:38:25,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:38:25,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:38:25,994 INFO L87 Difference]: Start difference. First operand 138 states and 158 transitions. Second operand 9 states. [2020-12-23 07:38:26,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:38:26,746 INFO L93 Difference]: Finished difference Result 166 states and 188 transitions. [2020-12-23 07:38:26,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:38:26,746 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-12-23 07:38:26,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:38:26,748 INFO L225 Difference]: With dead ends: 166 [2020-12-23 07:38:26,748 INFO L226 Difference]: Without dead ends: 162 [2020-12-23 07:38:26,749 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 [2020-12-23 07:38:26,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-23 07:38:26,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 142. [2020-12-23 07:38:26,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-23 07:38:26,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 163 transitions. [2020-12-23 07:38:26,772 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 163 transitions. Word has length 37 [2020-12-23 07:38:26,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:38:26,772 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 163 transitions. [2020-12-23 07:38:26,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:38:26,773 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 163 transitions. [2020-12-23 07:38:26,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-23 07:38:26,773 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:26,773 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] [2020-12-23 07:38:26,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-23 07:38:26,987 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]=== [2020-12-23 07:38:26,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:26,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1198667980, now seen corresponding path program 2 times [2020-12-23 07:38:26,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:26,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213471605] [2020-12-23 07:38:26,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:26,996 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:26,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [754155429] [2020-12-23 07:38:26,997 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 [2020-12-23 07:38:27,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:38:27,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:38:27,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 56 conjunts are in the unsatisfiable core [2020-12-23 07:38:27,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:38:29,374 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_ULTIMATE.start_main_~s~0 c_ULTIMATE.start_main_~y~0))) (and (not (= c_ULTIMATE.start_main_~b~0 0)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= c_ULTIMATE.start_main_~r~0 0) (let ((.cse0 (= c_ULTIMATE.start_main_~b~0 (+ .cse1 (* c_ULTIMATE.start_main_~q~0 c_ULTIMATE.start_main_~x~0))))) (or (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse0)) (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse0))) (<= 0 c_ULTIMATE.start_main_~b~0) (<= 1 c_ULTIMATE.start_main_~x~0) (= (+ .cse1 (* c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~y~0)) (+ (* c_ULTIMATE.start_main_~p~0 c_ULTIMATE.start_main_~x~0) c_ULTIMATE.start_main_~b~0 c_ULTIMATE.start_main_~a~0)) (= c_ULTIMATE.start_main_~y~0 (+ (* 2 c_ULTIMATE.start_main_~a~0) c_ULTIMATE.start_main_~b~0)) (= (+ c_ULTIMATE.start_main_~q~0 (* 2 c_ULTIMATE.start_main_~p~0)) 0))) is different from false [2020-12-23 07:38:54,553 WARN L197 SmtUtils]: Spent 21.58 s on a formula simplification that was a NOOP. DAG size: 33 [2020-12-23 07:38:54,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213471605] [2020-12-23 07:38:54,564 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:38:54,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754155429] [2020-12-23 07:38:54,564 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-23 07:38:54,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:38:54,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-23 07:38:54,565 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-23 07:38:54,565 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 07:38:54,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-23 07:38:54,787 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-23 07:38:54,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:38:54 BoogieIcfgContainer [2020-12-23 07:38:54,788 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:38:54,788 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:38:54,789 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:38:54,789 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:38:54,789 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:37:33" (3/4) ... [2020-12-23 07:38:54,793 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 07:38:54,793 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:38:54,794 INFO L168 Benchmark]: Toolchain (without parser) took 82753.46 ms. Allocated memory was 178.3 MB in the beginning and 273.7 MB in the end (delta: 95.4 MB). Free memory was 152.8 MB in the beginning and 152.1 MB in the end (delta: 728.1 kB). Peak memory consumption was 98.2 MB. Max. memory is 8.0 GB. [2020-12-23 07:38:54,794 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 178.3 MB. Free memory is still 152.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:38:54,795 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.16 ms. Allocated memory is still 178.3 MB. Free memory was 152.6 MB in the beginning and 142.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 07:38:54,795 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.98 ms. Allocated memory is still 178.3 MB. Free memory was 142.5 MB in the beginning and 140.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:38:54,795 INFO L168 Benchmark]: Boogie Preprocessor took 27.78 ms. Allocated memory is still 178.3 MB. Free memory was 140.8 MB in the beginning and 139.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:38:54,796 INFO L168 Benchmark]: RCFGBuilder took 616.12 ms. Allocated memory is still 178.3 MB. Free memory was 139.6 MB in the beginning and 122.2 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-12-23 07:38:54,796 INFO L168 Benchmark]: TraceAbstraction took 81772.23 ms. Allocated memory was 178.3 MB in the beginning and 273.7 MB in the end (delta: 95.4 MB). Free memory was 121.9 MB in the beginning and 152.1 MB in the end (delta: -30.2 MB). Peak memory consumption was 66.8 MB. Max. memory is 8.0 GB. [2020-12-23 07:38:54,797 INFO L168 Benchmark]: Witness Printer took 4.58 ms. Allocated memory is still 273.7 MB. Free memory is still 152.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:38:54,799 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 178.3 MB. Free memory is still 152.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 277.16 ms. Allocated memory is still 178.3 MB. Free memory was 152.6 MB in the beginning and 142.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 47.98 ms. Allocated memory is still 178.3 MB. Free memory was 142.5 MB in the beginning and 140.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 27.78 ms. Allocated memory is still 178.3 MB. Free memory was 140.8 MB in the beginning and 139.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 616.12 ms. Allocated memory is still 178.3 MB. Free memory was 139.6 MB in the beginning and 122.2 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 81772.23 ms. Allocated memory was 178.3 MB in the beginning and 273.7 MB in the end (delta: 95.4 MB). Free memory was 121.9 MB in the beginning and 152.1 MB in the end (delta: -30.2 MB). Peak memory consumption was 66.8 MB. Max. memory is 8.0 GB. * Witness Printer took 4.58 ms. Allocated memory is still 273.7 MB. Free memory is still 152.1 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: 81.6s, OverallIterations: 22, TraceHistogramMax: 4, AutomataDifference: 36.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 699 SDtfs, 2040 SDslu, 2140 SDs, 0 SdLazy, 3283 SolverSat, 391 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 8.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 662 GetRequests, 406 SyntacticMatches, 1 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 34.2s 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: 0.4s AutomataMinimizationTime, 21 MinimizatonAttempts, 333 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 9.6s InterpolantComputationTime, 577 NumberOfCodeBlocks, 566 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 556 ConstructedInterpolants, 4 QuantifiedInterpolants, 240653 SizeOfPredicates, 222 NumberOfNonLiveVariables, 2350 ConjunctsInSsa, 668 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...