/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/hard-ll_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:51:18,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:51:18,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:51:18,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:51:18,525 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:51:18,526 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:51:18,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:51:18,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:51:18,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:51:18,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:51:18,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:51:18,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:51:18,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:51:18,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:51:18,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:51:18,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:51:18,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:51:18,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:51:18,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:51:18,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:51:18,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:51:18,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:51:18,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:51:18,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:51:18,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:51:18,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:51:18,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:51:18,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:51:18,579 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 07:51:18,605 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:51:18,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:51:18,607 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:51:18,607 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:51:18,608 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:51:18,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:51:18,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:51:18,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:51:18,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:51:18,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:51:18,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:51:18,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:51:18,609 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:51:18,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:51:18,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:51:18,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:51:18,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:51:18,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:51:18,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:51:18,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:51:18,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:51:18,611 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:51:18,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:51:18,611 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:51:18,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:51:18,612 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:51:18,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:51:18,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:51:18,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:51:18,977 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:51:18,977 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:51:18,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound10.c [2020-12-23 07:51:19,064 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ee8eb0519/a2d6a807cf524184b0c94c6adcc01742/FLAG110fc2126 [2020-12-23 07:51:19,653 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:51:19,654 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound10.c [2020-12-23 07:51:19,665 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ee8eb0519/a2d6a807cf524184b0c94c6adcc01742/FLAG110fc2126 [2020-12-23 07:51:19,973 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ee8eb0519/a2d6a807cf524184b0c94c6adcc01742 [2020-12-23 07:51:19,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:51:19,979 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:51:19,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:51:19,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:51:19,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:51:19,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:51:19" (1/1) ... [2020-12-23 07:51:19,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15e1ea72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:51:19, skipping insertion in model container [2020-12-23 07:51:19,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:51:19" (1/1) ... [2020-12-23 07:51:20,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:51:20,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:51:20,166 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/hard-ll_unwindbound10.c[538,551] 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[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~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[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~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[~q~0,] [2020-12-23 07:51:20,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:51:20,199 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:51:20,212 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/hard-ll_unwindbound10.c[538,551] 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[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~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[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~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[~q~0,] [2020-12-23 07:51:20,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:51:20,240 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:51:20,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:51:20 WrapperNode [2020-12-23 07:51:20,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:51:20,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:51:20,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:51:20,242 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:51:20,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:51:20" (1/1) ... [2020-12-23 07:51:20,258 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:51:20" (1/1) ... [2020-12-23 07:51:20,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:51:20,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:51:20,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:51:20,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:51:20,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:51:20" (1/1) ... [2020-12-23 07:51:20,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:51:20" (1/1) ... [2020-12-23 07:51:20,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:51:20" (1/1) ... [2020-12-23 07:51:20,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:51:20" (1/1) ... [2020-12-23 07:51:20,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:51:20" (1/1) ... [2020-12-23 07:51:20,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:51:20" (1/1) ... [2020-12-23 07:51:20,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:51:20" (1/1) ... [2020-12-23 07:51:20,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:51:20,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:51:20,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:51:20,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:51:20,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:51:20" (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 07:51:20,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:51:20,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:51:20,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:51:20,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:51:20,823 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:51:20,824 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-23 07:51:20,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:51:20 BoogieIcfgContainer [2020-12-23 07:51:20,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:51:20,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:51:20,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:51:20,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:51:20,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:51:19" (1/3) ... [2020-12-23 07:51:20,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2061caac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:51:20, skipping insertion in model container [2020-12-23 07:51:20,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:51:20" (2/3) ... [2020-12-23 07:51:20,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2061caac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:51:20, skipping insertion in model container [2020-12-23 07:51:20,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:51:20" (3/3) ... [2020-12-23 07:51:20,842 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_unwindbound10.c [2020-12-23 07:51:20,854 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:51:20,859 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-23 07:51:20,879 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-23 07:51:20,927 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:51:20,927 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:51:20,927 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:51:20,927 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:51:20,928 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:51:20,928 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:51:20,928 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:51:20,928 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:51:20,945 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-23 07:51:20,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 07:51:20,950 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:20,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:20,952 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 07:51:20,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:20,958 INFO L82 PathProgramCache]: Analyzing trace with hash 119446382, now seen corresponding path program 1 times [2020-12-23 07:51:20,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:20,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552004165] [2020-12-23 07:51:20,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:51:21,126 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 07:51:21,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552004165] [2020-12-23 07:51:21,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:51:21,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:51:21,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657845096] [2020-12-23 07:51:21,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:51:21,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:21,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:51:21,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:51:21,152 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-23 07:51:21,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:21,174 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2020-12-23 07:51:21,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:51:21,176 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-23 07:51:21,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:21,186 INFO L225 Difference]: With dead ends: 79 [2020-12-23 07:51:21,186 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 07:51:21,190 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 07:51:21,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 07:51:21,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-23 07:51:21,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 07:51:21,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-23 07:51:21,231 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2020-12-23 07:51:21,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:21,231 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-23 07:51:21,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:51:21,232 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-23 07:51:21,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 07:51:21,232 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:21,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:21,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:51:21,233 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 07:51:21,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:21,234 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-12-23 07:51:21,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:21,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180953237] [2020-12-23 07:51:21,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:51:21,325 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 07:51:21,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180953237] [2020-12-23 07:51:21,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:51:21,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:51:21,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128083296] [2020-12-23 07:51:21,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:51:21,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:21,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:51:21,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:51:21,329 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-23 07:51:21,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:21,436 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-12-23 07:51:21,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:51:21,437 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-23 07:51:21,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:21,438 INFO L225 Difference]: With dead ends: 61 [2020-12-23 07:51:21,438 INFO L226 Difference]: Without dead ends: 59 [2020-12-23 07:51:21,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:51:21,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-23 07:51:21,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2020-12-23 07:51:21,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 07:51:21,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-23 07:51:21,447 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-12-23 07:51:21,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:21,448 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-23 07:51:21,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:51:21,448 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-23 07:51:21,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 07:51:21,449 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:21,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:21,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 07:51:21,450 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 07:51:21,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:21,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1986071569, now seen corresponding path program 1 times [2020-12-23 07:51:21,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:21,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171159401] [2020-12-23 07:51:21,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:21,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:51:21,495 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 07:51:21,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171159401] [2020-12-23 07:51:21,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:51:21,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 07:51:21,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776436829] [2020-12-23 07:51:21,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:51:21,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:21,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:51:21,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:51:21,498 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-12-23 07:51:21,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:21,526 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2020-12-23 07:51:21,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:51:21,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-23 07:51:21,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:21,528 INFO L225 Difference]: With dead ends: 56 [2020-12-23 07:51:21,528 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 07:51:21,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:51:21,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 07:51:21,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-23 07:51:21,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 07:51:21,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-23 07:51:21,536 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 10 [2020-12-23 07:51:21,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:21,537 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-23 07:51:21,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:51:21,537 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-23 07:51:21,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 07:51:21,538 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:21,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:21,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 07:51:21,538 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 07:51:21,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:21,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2020-12-23 07:51:21,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:21,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938207248] [2020-12-23 07:51:21,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:51:21,639 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 07:51:21,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938207248] [2020-12-23 07:51:21,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:51:21,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:51:21,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938825567] [2020-12-23 07:51:21,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:51:21,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:21,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:51:21,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:51:21,644 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-23 07:51:21,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:21,746 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-12-23 07:51:21,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:51:21,746 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-23 07:51:21,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:21,747 INFO L225 Difference]: With dead ends: 56 [2020-12-23 07:51:21,747 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 07:51:21,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:51:21,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 07:51:21,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-12-23 07:51:21,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 07:51:21,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-23 07:51:21,756 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 10 [2020-12-23 07:51:21,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:21,757 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-23 07:51:21,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:51:21,757 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-23 07:51:21,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 07:51:21,758 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:21,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:21,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 07:51:21,758 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 07:51:21,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:21,759 INFO L82 PathProgramCache]: Analyzing trace with hash -941046702, now seen corresponding path program 1 times [2020-12-23 07:51:21,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:21,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419539760] [2020-12-23 07:51:21,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:21,776 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:21,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1629394815] [2020-12-23 07:51:21,777 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 07:51:21,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:51:21,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:51:21,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:21,919 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 07:51:21,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419539760] [2020-12-23 07:51:21,920 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:21,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629394815] [2020-12-23 07:51:21,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:51:21,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:51:21,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102783403] [2020-12-23 07:51:21,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:51:21,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:21,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:51:21,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:51:21,923 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-12-23 07:51:22,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:22,036 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-12-23 07:51:22,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:51:22,037 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-23 07:51:22,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:22,038 INFO L225 Difference]: With dead ends: 81 [2020-12-23 07:51:22,038 INFO L226 Difference]: Without dead ends: 58 [2020-12-23 07:51:22,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:51:22,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-23 07:51:22,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2020-12-23 07:51:22,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-23 07:51:22,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2020-12-23 07:51:22,049 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 12 [2020-12-23 07:51:22,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:22,049 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2020-12-23 07:51:22,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:51:22,049 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2020-12-23 07:51:22,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 07:51:22,050 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:22,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:22,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:22,267 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 07:51:22,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:22,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1803611644, now seen corresponding path program 1 times [2020-12-23 07:51:22,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:22,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772554042] [2020-12-23 07:51:22,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:22,307 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:22,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1134210412] [2020-12-23 07:51:22,307 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 07:51:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:51:22,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:51:22,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:22,526 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 07:51:22,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772554042] [2020-12-23 07:51:22,526 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:22,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134210412] [2020-12-23 07:51:22,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:51:22,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 07:51:22,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516628712] [2020-12-23 07:51:22,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:51:22,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:22,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:51:22,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:51:22,529 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 7 states. [2020-12-23 07:51:22,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:22,839 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-12-23 07:51:22,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:51:22,843 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-23 07:51:22,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:22,844 INFO L225 Difference]: With dead ends: 53 [2020-12-23 07:51:22,844 INFO L226 Difference]: Without dead ends: 41 [2020-12-23 07:51:22,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:51:22,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-23 07:51:22,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-12-23 07:51:22,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-23 07:51:22,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-12-23 07:51:22,855 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 16 [2020-12-23 07:51:22,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:22,857 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-12-23 07:51:22,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:51:22,857 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-12-23 07:51:22,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 07:51:22,858 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:22,858 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:23,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:23,060 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 07:51:23,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:23,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1571159167, now seen corresponding path program 1 times [2020-12-23 07:51:23,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:23,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41881479] [2020-12-23 07:51:23,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:23,075 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:23,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1343613811] [2020-12-23 07:51:23,076 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 07:51:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:51:23,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 07:51:23,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:23,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:51:23,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41881479] [2020-12-23 07:51:23,182 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:23,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343613811] [2020-12-23 07:51:23,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:51:23,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-23 07:51:23,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963330646] [2020-12-23 07:51:23,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:51:23,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:23,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:51:23,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:51:23,185 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 5 states. [2020-12-23 07:51:23,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:23,224 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-12-23 07:51:23,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:51:23,225 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-23 07:51:23,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:23,226 INFO L225 Difference]: With dead ends: 62 [2020-12-23 07:51:23,226 INFO L226 Difference]: Without dead ends: 43 [2020-12-23 07:51:23,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:51:23,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-23 07:51:23,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-12-23 07:51:23,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-23 07:51:23,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-12-23 07:51:23,245 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 18 [2020-12-23 07:51:23,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:23,246 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-12-23 07:51:23,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:51:23,246 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-12-23 07:51:23,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 07:51:23,248 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:23,248 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:23,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:23,455 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 07:51:23,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:23,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1642186908, now seen corresponding path program 1 times [2020-12-23 07:51:23,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:23,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178672254] [2020-12-23 07:51:23,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:23,470 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:23,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1496780755] [2020-12-23 07:51:23,470 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 07:51:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:51:23,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-23 07:51:23,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:23,726 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:51:23,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178672254] [2020-12-23 07:51:23,727 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:23,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496780755] [2020-12-23 07:51:23,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:51:23,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:51:23,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344857592] [2020-12-23 07:51:23,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:51:23,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:23,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:51:23,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:51:23,729 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 9 states. [2020-12-23 07:51:24,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:24,164 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2020-12-23 07:51:24,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:51:24,164 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-12-23 07:51:24,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:24,165 INFO L225 Difference]: With dead ends: 106 [2020-12-23 07:51:24,166 INFO L226 Difference]: Without dead ends: 83 [2020-12-23 07:51:24,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:51:24,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-23 07:51:24,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 64. [2020-12-23 07:51:24,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-23 07:51:24,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2020-12-23 07:51:24,178 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 20 [2020-12-23 07:51:24,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:24,178 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2020-12-23 07:51:24,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:51:24,178 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2020-12-23 07:51:24,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 07:51:24,179 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:24,179 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:24,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:24,394 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 07:51:24,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:24,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1958905870, now seen corresponding path program 1 times [2020-12-23 07:51:24,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:24,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91406720] [2020-12-23 07:51:24,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:24,408 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:24,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1000933432] [2020-12-23 07:51:24,408 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 07:51:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:51:24,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 07:51:24,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:24,696 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:51:24,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91406720] [2020-12-23 07:51:24,696 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:24,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000933432] [2020-12-23 07:51:24,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:51:24,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:51:24,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354107868] [2020-12-23 07:51:24,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:51:24,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:24,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:51:24,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:51:24,699 INFO L87 Difference]: Start difference. First operand 64 states and 74 transitions. Second operand 8 states. [2020-12-23 07:51:25,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:25,319 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2020-12-23 07:51:25,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:51:25,320 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-12-23 07:51:25,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:25,321 INFO L225 Difference]: With dead ends: 74 [2020-12-23 07:51:25,321 INFO L226 Difference]: Without dead ends: 62 [2020-12-23 07:51:25,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2020-12-23 07:51:25,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-23 07:51:25,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2020-12-23 07:51:25,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-23 07:51:25,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2020-12-23 07:51:25,331 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 24 [2020-12-23 07:51:25,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:25,331 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2020-12-23 07:51:25,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:51:25,332 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2020-12-23 07:51:25,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 07:51:25,333 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:25,333 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:25,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:25,548 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 07:51:25,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:25,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1637703955, now seen corresponding path program 2 times [2020-12-23 07:51:25,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:25,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505886697] [2020-12-23 07:51:25,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:25,562 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:25,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1228204118] [2020-12-23 07:51:25,562 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 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 07:51:25,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 07:51:25,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:51:25,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 07:51:25,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:25,650 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-23 07:51:25,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505886697] [2020-12-23 07:51:25,650 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:25,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228204118] [2020-12-23 07:51:25,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:51:25,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:51:25,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616291043] [2020-12-23 07:51:25,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:51:25,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:25,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:51:25,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:51:25,653 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand 5 states. [2020-12-23 07:51:25,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:25,686 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-12-23 07:51:25,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:51:25,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-12-23 07:51:25,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:25,688 INFO L225 Difference]: With dead ends: 87 [2020-12-23 07:51:25,688 INFO L226 Difference]: Without dead ends: 68 [2020-12-23 07:51:25,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:51:25,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-23 07:51:25,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2020-12-23 07:51:25,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-23 07:51:25,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2020-12-23 07:51:25,698 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 26 [2020-12-23 07:51:25,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:25,698 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2020-12-23 07:51:25,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:51:25,699 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2020-12-23 07:51:25,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 07:51:25,700 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:25,700 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:25,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:25,916 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 07:51:25,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:25,917 INFO L82 PathProgramCache]: Analyzing trace with hash 2018616451, now seen corresponding path program 1 times [2020-12-23 07:51:25,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:25,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499669017] [2020-12-23 07:51:25,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:25,928 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:25,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1890501075] [2020-12-23 07:51:25,929 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 07:51:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:51:25,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 07:51:25,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:26,048 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:51:26,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499669017] [2020-12-23 07:51:26,049 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:26,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890501075] [2020-12-23 07:51:26,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:51:26,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:51:26,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862053377] [2020-12-23 07:51:26,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:51:26,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:26,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:51:26,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:51:26,051 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 6 states. [2020-12-23 07:51:26,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:26,074 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2020-12-23 07:51:26,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:51:26,075 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-23 07:51:26,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:26,076 INFO L225 Difference]: With dead ends: 65 [2020-12-23 07:51:26,076 INFO L226 Difference]: Without dead ends: 59 [2020-12-23 07:51:26,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:51:26,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-23 07:51:26,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-12-23 07:51:26,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-23 07:51:26,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2020-12-23 07:51:26,086 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 27 [2020-12-23 07:51:26,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:26,086 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2020-12-23 07:51:26,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:51:26,086 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2020-12-23 07:51:26,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 07:51:26,087 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:26,088 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:26,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:26,302 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 07:51:26,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:26,303 INFO L82 PathProgramCache]: Analyzing trace with hash -770811653, now seen corresponding path program 1 times [2020-12-23 07:51:26,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:26,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222969903] [2020-12-23 07:51:26,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:26,327 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:26,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [166830285] [2020-12-23 07:51:26,327 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 07:51:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:51:26,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 07:51:26,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:26,446 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 07:51:26,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222969903] [2020-12-23 07:51:26,447 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:26,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166830285] [2020-12-23 07:51:26,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:51:26,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:51:26,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204463592] [2020-12-23 07:51:26,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:51:26,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:26,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:51:26,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:51:26,449 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 6 states. [2020-12-23 07:51:26,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:26,488 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2020-12-23 07:51:26,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:51:26,489 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-23 07:51:26,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:26,490 INFO L225 Difference]: With dead ends: 70 [2020-12-23 07:51:26,490 INFO L226 Difference]: Without dead ends: 60 [2020-12-23 07:51:26,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:51:26,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-23 07:51:26,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-12-23 07:51:26,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-23 07:51:26,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2020-12-23 07:51:26,498 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 27 [2020-12-23 07:51:26,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:26,498 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2020-12-23 07:51:26,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:51:26,499 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2020-12-23 07:51:26,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 07:51:26,500 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:26,500 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:26,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-23 07:51:26,714 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 07:51:26,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:26,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1711245194, now seen corresponding path program 2 times [2020-12-23 07:51:26,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:26,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776155862] [2020-12-23 07:51:26,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:26,726 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:26,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [396144523] [2020-12-23 07:51:26,726 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 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 07:51:26,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:51:26,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:51:26,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 42 conjunts are in the unsatisfiable core [2020-12-23 07:51:26,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:27,199 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:51:27,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776155862] [2020-12-23 07:51:27,200 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:27,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396144523] [2020-12-23 07:51:27,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:51:27,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-23 07:51:27,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935211875] [2020-12-23 07:51:27,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 07:51:27,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:27,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 07:51:27,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:51:27,207 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 12 states. [2020-12-23 07:51:28,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:28,541 INFO L93 Difference]: Finished difference Result 119 states and 131 transitions. [2020-12-23 07:51:28,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 07:51:28,541 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2020-12-23 07:51:28,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:28,542 INFO L225 Difference]: With dead ends: 119 [2020-12-23 07:51:28,543 INFO L226 Difference]: Without dead ends: 107 [2020-12-23 07:51:28,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-12-23 07:51:28,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-23 07:51:28,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 79. [2020-12-23 07:51:28,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-12-23 07:51:28,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 90 transitions. [2020-12-23 07:51:28,556 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 90 transitions. Word has length 28 [2020-12-23 07:51:28,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:28,556 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 90 transitions. [2020-12-23 07:51:28,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 07:51:28,556 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 90 transitions. [2020-12-23 07:51:28,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:51:28,557 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:28,558 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:28,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:28,771 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 07:51:28,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:28,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1339843922, now seen corresponding path program 1 times [2020-12-23 07:51:28,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:28,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247733960] [2020-12-23 07:51:28,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:28,782 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:28,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888556289] [2020-12-23 07:51:28,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:51:28,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-23 07:51:28,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:29,176 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:51:29,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247733960] [2020-12-23 07:51:29,177 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:29,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888556289] [2020-12-23 07:51:29,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:51:29,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:51:29,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583780081] [2020-12-23 07:51:29,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:51:29,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:29,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:51:29,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:51:29,179 INFO L87 Difference]: Start difference. First operand 79 states and 90 transitions. Second operand 10 states. [2020-12-23 07:51:29,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:29,791 INFO L93 Difference]: Finished difference Result 101 states and 115 transitions. [2020-12-23 07:51:29,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:51:29,791 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-12-23 07:51:29,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:29,792 INFO L225 Difference]: With dead ends: 101 [2020-12-23 07:51:29,792 INFO L226 Difference]: Without dead ends: 99 [2020-12-23 07:51:29,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-12-23 07:51:29,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-12-23 07:51:29,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 86. [2020-12-23 07:51:29,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-23 07:51:29,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions. [2020-12-23 07:51:29,804 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 31 [2020-12-23 07:51:29,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:29,804 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions. [2020-12-23 07:51:29,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:51:29,805 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions. [2020-12-23 07:51:29,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 07:51:29,806 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:29,806 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:30,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:30,011 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 07:51:30,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:30,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1414538084, now seen corresponding path program 1 times [2020-12-23 07:51:30,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:30,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303628455] [2020-12-23 07:51:30,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:30,022 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:30,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1984728250] [2020-12-23 07:51:30,023 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 07:51:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:51:30,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 07:51:30,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:30,179 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:51:30,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303628455] [2020-12-23 07:51:30,180 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:30,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984728250] [2020-12-23 07:51:30,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:51:30,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 07:51:30,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007930613] [2020-12-23 07:51:30,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:51:30,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:30,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:51:30,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:51:30,182 INFO L87 Difference]: Start difference. First operand 86 states and 101 transitions. Second operand 7 states. [2020-12-23 07:51:30,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:30,221 INFO L93 Difference]: Finished difference Result 97 states and 112 transitions. [2020-12-23 07:51:30,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:51:30,222 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-12-23 07:51:30,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:30,223 INFO L225 Difference]: With dead ends: 97 [2020-12-23 07:51:30,223 INFO L226 Difference]: Without dead ends: 89 [2020-12-23 07:51:30,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:51:30,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-23 07:51:30,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2020-12-23 07:51:30,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-23 07:51:30,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2020-12-23 07:51:30,234 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 32 [2020-12-23 07:51:30,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:30,234 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2020-12-23 07:51:30,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:51:30,234 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2020-12-23 07:51:30,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 07:51:30,235 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:30,236 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:30,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-23 07:51:30,451 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 07:51:30,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:30,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1150939168, now seen corresponding path program 2 times [2020-12-23 07:51:30,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:30,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353161462] [2020-12-23 07:51:30,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:30,466 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:30,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340966156] [2020-12-23 07:51:30,469 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 07:51:30,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 07:51:30,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:51:30,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-23 07:51:30,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:30,634 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-23 07:51:30,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353161462] [2020-12-23 07:51:30,640 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:30,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340966156] [2020-12-23 07:51:30,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:51:30,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 07:51:30,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328970892] [2020-12-23 07:51:30,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:51:30,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:30,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:51:30,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:51:30,642 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand 7 states. [2020-12-23 07:51:30,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:30,813 INFO L93 Difference]: Finished difference Result 113 states and 131 transitions. [2020-12-23 07:51:30,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:51:30,814 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-12-23 07:51:30,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:30,815 INFO L225 Difference]: With dead ends: 113 [2020-12-23 07:51:30,815 INFO L226 Difference]: Without dead ends: 109 [2020-12-23 07:51:30,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:51:30,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-23 07:51:30,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2020-12-23 07:51:30,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-12-23 07:51:30,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 121 transitions. [2020-12-23 07:51:30,826 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 121 transitions. Word has length 32 [2020-12-23 07:51:30,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:30,827 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 121 transitions. [2020-12-23 07:51:30,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:51:30,827 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 121 transitions. [2020-12-23 07:51:30,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:51:30,827 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:30,828 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:31,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-23 07:51:31,041 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 07:51:31,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:31,043 INFO L82 PathProgramCache]: Analyzing trace with hash -900022411, now seen corresponding path program 1 times [2020-12-23 07:51:31,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:31,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685606215] [2020-12-23 07:51:31,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:31,060 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:31,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216104979] [2020-12-23 07:51:31,060 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 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 07:51:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:51:31,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-23 07:51:31,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:31,344 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:51:31,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685606215] [2020-12-23 07:51:31,344 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:31,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216104979] [2020-12-23 07:51:31,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:51:31,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:51:31,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903139517] [2020-12-23 07:51:31,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:51:31,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:31,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:51:31,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:51:31,346 INFO L87 Difference]: Start difference. First operand 103 states and 121 transitions. Second operand 9 states. [2020-12-23 07:51:31,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:31,813 INFO L93 Difference]: Finished difference Result 132 states and 154 transitions. [2020-12-23 07:51:31,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:51:31,814 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-12-23 07:51:31,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:31,815 INFO L225 Difference]: With dead ends: 132 [2020-12-23 07:51:31,815 INFO L226 Difference]: Without dead ends: 104 [2020-12-23 07:51:31,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-12-23 07:51:31,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-23 07:51:31,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2020-12-23 07:51:31,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-12-23 07:51:31,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 116 transitions. [2020-12-23 07:51:31,826 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 116 transitions. Word has length 33 [2020-12-23 07:51:31,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:31,826 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 116 transitions. [2020-12-23 07:51:31,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:51:31,826 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 116 transitions. [2020-12-23 07:51:31,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-23 07:51:31,827 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:31,827 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:32,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-23 07:51:32,042 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 07:51:32,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:32,042 INFO L82 PathProgramCache]: Analyzing trace with hash 918142130, now seen corresponding path program 1 times [2020-12-23 07:51:32,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:32,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102275595] [2020-12-23 07:51:32,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:32,051 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:32,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [217349918] [2020-12-23 07:51:32,051 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 07:51:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:51:32,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 07:51:32,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:32,341 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:51:32,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102275595] [2020-12-23 07:51:32,341 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:32,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217349918] [2020-12-23 07:51:32,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:51:32,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:51:32,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25708859] [2020-12-23 07:51:32,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:51:32,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:32,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:51:32,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:51:32,343 INFO L87 Difference]: Start difference. First operand 102 states and 116 transitions. Second operand 10 states. [2020-12-23 07:51:33,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:33,269 INFO L93 Difference]: Finished difference Result 154 states and 166 transitions. [2020-12-23 07:51:33,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 07:51:33,270 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-12-23 07:51:33,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:33,272 INFO L225 Difference]: With dead ends: 154 [2020-12-23 07:51:33,272 INFO L226 Difference]: Without dead ends: 137 [2020-12-23 07:51:33,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-12-23 07:51:33,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-12-23 07:51:33,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 93. [2020-12-23 07:51:33,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-23 07:51:33,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 110 transitions. [2020-12-23 07:51:33,283 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 110 transitions. Word has length 36 [2020-12-23 07:51:33,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:33,283 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 110 transitions. [2020-12-23 07:51:33,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:51:33,283 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 110 transitions. [2020-12-23 07:51:33,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-23 07:51:33,284 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:33,284 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:33,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:33,498 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 07:51:33,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:33,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1625393032, now seen corresponding path program 3 times [2020-12-23 07:51:33,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:33,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161801030] [2020-12-23 07:51:33,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:33,508 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:33,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1115590530] [2020-12-23 07:51:33,508 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 07:51:33,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:51:33,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:51:33,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-23 07:51:33,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:37,705 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-23 07:51:37,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161801030] [2020-12-23 07:51:37,706 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:37,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115590530] [2020-12-23 07:51:37,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:51:37,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:51:37,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984685857] [2020-12-23 07:51:37,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:51:37,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:37,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:51:37,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=29, Unknown=2, NotChecked=0, Total=42 [2020-12-23 07:51:37,707 INFO L87 Difference]: Start difference. First operand 93 states and 110 transitions. Second operand 7 states. [2020-12-23 07:52:51,249 WARN L197 SmtUtils]: Spent 18.14 s on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2020-12-23 07:53:05,422 WARN L197 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 18 [2020-12-23 07:53:52,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:53:52,554 INFO L93 Difference]: Finished difference Result 154 states and 171 transitions. [2020-12-23 07:53:52,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 07:53:52,555 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-12-23 07:53:52,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:53:52,556 INFO L225 Difference]: With dead ends: 154 [2020-12-23 07:53:52,556 INFO L226 Difference]: Without dead ends: 144 [2020-12-23 07:53:52,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 63.6s TimeCoverageRelationStatistics Valid=71, Invalid=153, Unknown=16, NotChecked=0, Total=240 [2020-12-23 07:53:52,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-12-23 07:53:52,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 108. [2020-12-23 07:53:52,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-23 07:53:52,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 130 transitions. [2020-12-23 07:53:52,582 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 130 transitions. Word has length 36 [2020-12-23 07:53:52,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:53:52,582 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 130 transitions. [2020-12-23 07:53:52,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:53:52,582 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 130 transitions. [2020-12-23 07:53:52,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:53:52,583 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:53:52,583 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:53:52,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:53:52,797 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 07:53:52,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:53:52,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1658895220, now seen corresponding path program 1 times [2020-12-23 07:53:52,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:53:52,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96647170] [2020-12-23 07:53:52,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:53:52,812 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:53:52,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [87657390] [2020-12-23 07:53:52,817 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 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 07:53:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:53:52,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 07:53:52,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:53:52,952 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 07:53:52,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96647170] [2020-12-23 07:53:52,952 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:53:52,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87657390] [2020-12-23 07:53:52,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:53:52,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 07:53:52,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112398182] [2020-12-23 07:53:52,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:53:52,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:53:52,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:53:52,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:53:52,954 INFO L87 Difference]: Start difference. First operand 108 states and 130 transitions. Second operand 7 states. [2020-12-23 07:53:53,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:53:53,024 INFO L93 Difference]: Finished difference Result 118 states and 140 transitions. [2020-12-23 07:53:53,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:53:53,025 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-12-23 07:53:53,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:53:53,026 INFO L225 Difference]: With dead ends: 118 [2020-12-23 07:53:53,026 INFO L226 Difference]: Without dead ends: 110 [2020-12-23 07:53:53,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:53:53,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-12-23 07:53:53,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-12-23 07:53:53,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-12-23 07:53:53,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 132 transitions. [2020-12-23 07:53:53,037 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 132 transitions. Word has length 37 [2020-12-23 07:53:53,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:53:53,038 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 132 transitions. [2020-12-23 07:53:53,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:53:53,038 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 132 transitions. [2020-12-23 07:53:53,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-23 07:53:53,038 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:53:53,039 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:53:53,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:53:53,251 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 07:53:53,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:53:53,252 INFO L82 PathProgramCache]: Analyzing trace with hash 406136064, now seen corresponding path program 2 times [2020-12-23 07:53:53,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:53:53,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063035133] [2020-12-23 07:53:53,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:53:53,265 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:53:53,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [542615681] [2020-12-23 07:53:53,266 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 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 07:53:53,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:53:53,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:53:53,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 49 conjunts are in the unsatisfiable core [2020-12-23 07:53:53,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:53:53,916 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:53:53,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063035133] [2020-12-23 07:53:53,916 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:53:53,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542615681] [2020-12-23 07:53:53,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:53:53,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-23 07:53:53,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459747541] [2020-12-23 07:53:53,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 07:53:53,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:53:53,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 07:53:53,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:53:53,918 INFO L87 Difference]: Start difference. First operand 110 states and 132 transitions. Second operand 13 states. [2020-12-23 07:53:54,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:53:54,976 INFO L93 Difference]: Finished difference Result 162 states and 197 transitions. [2020-12-23 07:53:54,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 07:53:54,977 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-12-23 07:53:54,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:53:54,978 INFO L225 Difference]: With dead ends: 162 [2020-12-23 07:53:54,978 INFO L226 Difference]: Without dead ends: 122 [2020-12-23 07:53:54,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2020-12-23 07:53:54,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-12-23 07:53:54,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 111. [2020-12-23 07:53:54,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-12-23 07:53:54,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 134 transitions. [2020-12-23 07:53:54,992 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 134 transitions. Word has length 39 [2020-12-23 07:53:54,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:53:54,992 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 134 transitions. [2020-12-23 07:53:54,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 07:53:54,992 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 134 transitions. [2020-12-23 07:53:54,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-23 07:53:54,993 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:53:54,993 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:53:55,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-23 07:53:55,207 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 07:53:55,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:53:55,208 INFO L82 PathProgramCache]: Analyzing trace with hash -294710610, now seen corresponding path program 2 times [2020-12-23 07:53:55,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:53:55,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044458011] [2020-12-23 07:53:55,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:53:55,226 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:53:55,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [927839796] [2020-12-23 07:53:55,227 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 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 07:53:55,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:53:55,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:53:55,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 07:53:55,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:53:55,380 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:53:55,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044458011] [2020-12-23 07:53:55,381 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:53:55,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927839796] [2020-12-23 07:53:55,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:53:55,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:53:55,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242660074] [2020-12-23 07:53:55,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:53:55,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:53:55,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:53:55,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:53:55,383 INFO L87 Difference]: Start difference. First operand 111 states and 134 transitions. Second operand 8 states. [2020-12-23 07:53:55,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:53:55,442 INFO L93 Difference]: Finished difference Result 130 states and 154 transitions. [2020-12-23 07:53:55,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:53:55,442 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-12-23 07:53:55,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:53:55,443 INFO L225 Difference]: With dead ends: 130 [2020-12-23 07:53:55,444 INFO L226 Difference]: Without dead ends: 120 [2020-12-23 07:53:55,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:53:55,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-12-23 07:53:55,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2020-12-23 07:53:55,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-12-23 07:53:55,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 142 transitions. [2020-12-23 07:53:55,458 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 142 transitions. Word has length 40 [2020-12-23 07:53:55,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:53:55,458 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 142 transitions. [2020-12-23 07:53:55,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:53:55,458 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 142 transitions. [2020-12-23 07:53:55,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-23 07:53:55,459 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:53:55,459 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:53:55,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-23 07:53:55,674 INFO L429 AbstractCegarLoop]: === Iteration 23 === [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 07:53:55,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:53:55,675 INFO L82 PathProgramCache]: Analyzing trace with hash 2116618682, now seen corresponding path program 2 times [2020-12-23 07:53:55,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:53:55,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133773164] [2020-12-23 07:53:55,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:53:55,690 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:53:55,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [856476583] [2020-12-23 07:53:55,691 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 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 07:53:55,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:53:55,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:53:55,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 07:53:55,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:53:55,861 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:53:55,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133773164] [2020-12-23 07:53:55,861 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:53:55,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856476583] [2020-12-23 07:53:55,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:53:55,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:53:55,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037824751] [2020-12-23 07:53:55,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:53:55,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:53:55,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:53:55,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:53:55,863 INFO L87 Difference]: Start difference. First operand 119 states and 142 transitions. Second operand 8 states. [2020-12-23 07:53:55,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:53:55,950 INFO L93 Difference]: Finished difference Result 129 states and 152 transitions. [2020-12-23 07:53:55,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:53:55,951 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-12-23 07:53:55,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:53:55,952 INFO L225 Difference]: With dead ends: 129 [2020-12-23 07:53:55,952 INFO L226 Difference]: Without dead ends: 121 [2020-12-23 07:53:55,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:53:55,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-12-23 07:53:55,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-12-23 07:53:55,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-12-23 07:53:55,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 144 transitions. [2020-12-23 07:53:55,965 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 144 transitions. Word has length 45 [2020-12-23 07:53:55,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:53:55,965 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 144 transitions. [2020-12-23 07:53:55,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:53:55,966 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 144 transitions. [2020-12-23 07:53:55,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-23 07:53:55,966 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:53:55,966 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:53:56,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-23 07:53:56,181 INFO L429 AbstractCegarLoop]: === Iteration 24 === [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 07:53:56,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:53:56,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1302416352, now seen corresponding path program 3 times [2020-12-23 07:53:56,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:53:56,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980570767] [2020-12-23 07:53:56,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:53:56,190 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:53:56,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1386965460] [2020-12-23 07:53:56,190 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 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 07:53:56,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 07:53:56,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:53:56,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 70 conjunts are in the unsatisfiable core [2020-12-23 07:53:56,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:53:57,128 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:53:57,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980570767] [2020-12-23 07:53:57,129 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:53:57,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386965460] [2020-12-23 07:53:57,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:53:57,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-12-23 07:53:57,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816840859] [2020-12-23 07:53:57,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 07:53:57,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:53:57,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 07:53:57,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:53:57,131 INFO L87 Difference]: Start difference. First operand 121 states and 144 transitions. Second operand 15 states. [2020-12-23 07:53:58,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:53:58,516 INFO L93 Difference]: Finished difference Result 171 states and 205 transitions. [2020-12-23 07:53:58,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 07:53:58,517 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 46 [2020-12-23 07:53:58,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:53:58,518 INFO L225 Difference]: With dead ends: 171 [2020-12-23 07:53:58,519 INFO L226 Difference]: Without dead ends: 135 [2020-12-23 07:53:58,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2020-12-23 07:53:58,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-12-23 07:53:58,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 122. [2020-12-23 07:53:58,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-12-23 07:53:58,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 145 transitions. [2020-12-23 07:53:58,533 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 145 transitions. Word has length 46 [2020-12-23 07:53:58,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:53:58,533 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 145 transitions. [2020-12-23 07:53:58,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 07:53:58,533 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 145 transitions. [2020-12-23 07:53:58,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-23 07:53:58,534 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:53:58,534 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:53:58,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-23 07:53:58,749 INFO L429 AbstractCegarLoop]: === Iteration 25 === [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 07:53:58,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:53:58,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1720227954, now seen corresponding path program 3 times [2020-12-23 07:53:58,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:53:58,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525734395] [2020-12-23 07:53:58,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:53:58,759 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:53:58,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [896758591] [2020-12-23 07:53:58,759 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 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 07:53:58,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 07:53:58,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:53:58,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-23 07:53:58,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:53:59,070 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:53:59,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525734395] [2020-12-23 07:53:59,070 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:53:59,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896758591] [2020-12-23 07:53:59,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:53:59,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:53:59,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995037603] [2020-12-23 07:53:59,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:53:59,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:53:59,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:53:59,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:53:59,072 INFO L87 Difference]: Start difference. First operand 122 states and 145 transitions. Second operand 9 states. [2020-12-23 07:53:59,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:53:59,149 INFO L93 Difference]: Finished difference Result 152 states and 180 transitions. [2020-12-23 07:53:59,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:53:59,150 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-12-23 07:53:59,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:53:59,151 INFO L225 Difference]: With dead ends: 152 [2020-12-23 07:53:59,151 INFO L226 Difference]: Without dead ends: 142 [2020-12-23 07:53:59,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:53:59,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-12-23 07:53:59,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2020-12-23 07:53:59,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-12-23 07:53:59,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 166 transitions. [2020-12-23 07:53:59,165 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 166 transitions. Word has length 47 [2020-12-23 07:53:59,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:53:59,165 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 166 transitions. [2020-12-23 07:53:59,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:53:59,166 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 166 transitions. [2020-12-23 07:53:59,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-23 07:53:59,166 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:53:59,166 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:53:59,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-23 07:53:59,373 INFO L429 AbstractCegarLoop]: === Iteration 26 === [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 07:53:59,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:53:59,373 INFO L82 PathProgramCache]: Analyzing trace with hash -572369234, now seen corresponding path program 4 times [2020-12-23 07:53:59,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:53:59,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50240119] [2020-12-23 07:53:59,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:53:59,381 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:53:59,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [640674154] [2020-12-23 07:53:59,381 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:53:59,516 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 07:53:59,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:53:59,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 50 conjunts are in the unsatisfiable core [2020-12-23 07:53:59,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:00,113 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:00,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50240119] [2020-12-23 07:54:00,114 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:00,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640674154] [2020-12-23 07:54:00,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:54:00,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-23 07:54:00,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180857040] [2020-12-23 07:54:00,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 07:54:00,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:00,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 07:54:00,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:54:00,116 INFO L87 Difference]: Start difference. First operand 141 states and 166 transitions. Second operand 13 states. [2020-12-23 07:54:01,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:01,536 INFO L93 Difference]: Finished difference Result 201 states and 241 transitions. [2020-12-23 07:54:01,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:54:01,536 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 47 [2020-12-23 07:54:01,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:01,537 INFO L225 Difference]: With dead ends: 201 [2020-12-23 07:54:01,538 INFO L226 Difference]: Without dead ends: 162 [2020-12-23 07:54:01,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2020-12-23 07:54:01,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-23 07:54:01,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 143. [2020-12-23 07:54:01,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-12-23 07:54:01,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 168 transitions. [2020-12-23 07:54:01,555 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 168 transitions. Word has length 47 [2020-12-23 07:54:01,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:01,555 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 168 transitions. [2020-12-23 07:54:01,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 07:54:01,556 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 168 transitions. [2020-12-23 07:54:01,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-23 07:54:01,556 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:01,556 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:01,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:01,767 INFO L429 AbstractCegarLoop]: === Iteration 27 === [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 07:54:01,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:01,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1786473789, now seen corresponding path program 2 times [2020-12-23 07:54:01,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:01,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638314502] [2020-12-23 07:54:01,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:01,787 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:01,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [485054302] [2020-12-23 07:54:01,787 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:01,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:54:01,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:54:01,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 60 conjunts are in the unsatisfiable core [2020-12-23 07:54:01,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:03,127 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 32 [2020-12-23 07:54:03,289 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:03,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638314502] [2020-12-23 07:54:03,289 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:03,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485054302] [2020-12-23 07:54:03,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:54:03,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-12-23 07:54:03,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070970204] [2020-12-23 07:54:03,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-23 07:54:03,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:03,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-23 07:54:03,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:54:03,291 INFO L87 Difference]: Start difference. First operand 143 states and 168 transitions. Second operand 18 states. [2020-12-23 07:54:04,988 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2020-12-23 07:54:05,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:05,144 INFO L93 Difference]: Finished difference Result 179 states and 212 transitions. [2020-12-23 07:54:05,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 07:54:05,146 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 48 [2020-12-23 07:54:05,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:05,147 INFO L225 Difference]: With dead ends: 179 [2020-12-23 07:54:05,147 INFO L226 Difference]: Without dead ends: 151 [2020-12-23 07:54:05,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2020-12-23 07:54:05,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-12-23 07:54:05,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2020-12-23 07:54:05,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-12-23 07:54:05,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 174 transitions. [2020-12-23 07:54:05,165 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 174 transitions. Word has length 48 [2020-12-23 07:54:05,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:05,165 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 174 transitions. [2020-12-23 07:54:05,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-23 07:54:05,165 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 174 transitions. [2020-12-23 07:54:05,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-23 07:54:05,166 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:05,166 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:05,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-23 07:54:05,378 INFO L429 AbstractCegarLoop]: === Iteration 28 === [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 07:54:05,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:05,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1895924060, now seen corresponding path program 2 times [2020-12-23 07:54:05,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:05,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648707188] [2020-12-23 07:54:05,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:05,389 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:05,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [405777070] [2020-12-23 07:54:05,389 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:05,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 07:54:05,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:54:05,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 07:54:05,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:07,811 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:54:10,345 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:54:16,718 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:54:18,763 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:54:20,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648707188] [2020-12-23 07:54:20,775 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:20,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405777070] [2020-12-23 07:54:20,776 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-23 07:54:20,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:54:20,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-23 07:54:20,776 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-23 07:54:20,776 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 07:54:20,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:21,005 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-23 07:54:21,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:54:21 BoogieIcfgContainer [2020-12-23 07:54:21,005 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:54:21,006 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:54:21,006 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:54:21,006 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:54:21,007 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:51:20" (3/4) ... [2020-12-23 07:54:21,010 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 07:54:21,010 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:54:21,011 INFO L168 Benchmark]: Toolchain (without parser) took 181032.94 ms. Allocated memory was 152.0 MB in the beginning and 269.5 MB in the end (delta: 117.4 MB). Free memory was 127.0 MB in the beginning and 245.2 MB in the end (delta: -118.2 MB). Peak memory consumption was 123.6 kB. Max. memory is 8.0 GB. [2020-12-23 07:54:21,012 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 152.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:54:21,012 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.61 ms. Allocated memory is still 152.0 MB. Free memory was 126.9 MB in the beginning and 116.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:21,012 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.90 ms. Allocated memory is still 152.0 MB. Free memory was 116.6 MB in the beginning and 115.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:21,013 INFO L168 Benchmark]: Boogie Preprocessor took 30.66 ms. Allocated memory is still 152.0 MB. Free memory was 115.0 MB in the beginning and 113.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:21,013 INFO L168 Benchmark]: RCFGBuilder took 511.75 ms. Allocated memory is still 152.0 MB. Free memory was 113.7 MB in the beginning and 132.3 MB in the end (delta: -18.6 MB). Peak memory consumption was 19.2 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:21,014 INFO L168 Benchmark]: TraceAbstraction took 180176.65 ms. Allocated memory was 152.0 MB in the beginning and 269.5 MB in the end (delta: 117.4 MB). Free memory was 131.7 MB in the beginning and 245.8 MB in the end (delta: -114.0 MB). Peak memory consumption was 160.2 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:21,014 INFO L168 Benchmark]: Witness Printer took 4.44 ms. Allocated memory is still 269.5 MB. Free memory was 245.8 MB in the beginning and 245.2 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:54:21,016 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 152.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 260.61 ms. Allocated memory is still 152.0 MB. Free memory was 126.9 MB in the beginning and 116.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 40.90 ms. Allocated memory is still 152.0 MB. Free memory was 116.6 MB in the beginning and 115.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.66 ms. Allocated memory is still 152.0 MB. Free memory was 115.0 MB in the beginning and 113.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 511.75 ms. Allocated memory is still 152.0 MB. Free memory was 113.7 MB in the beginning and 132.3 MB in the end (delta: -18.6 MB). Peak memory consumption was 19.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 180176.65 ms. Allocated memory was 152.0 MB in the beginning and 269.5 MB in the end (delta: 117.4 MB). Free memory was 131.7 MB in the beginning and 245.8 MB in the end (delta: -114.0 MB). Peak memory consumption was 160.2 MB. Max. memory is 8.0 GB. * Witness Printer took 4.44 ms. Allocated memory is still 269.5 MB. Free memory was 245.8 MB in the beginning and 245.2 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: 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: [L22] int counter = 0; [L24] unsigned int A, B; [L25] long long r, d, p, q; [L26] A = __VERIFIER_nondet_uint() [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 [L35] EXPR counter++ [L35] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p [L35] EXPR counter++ [L35] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p [L35] EXPR counter++ [L35] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND TRUE !(r >= d) [L45] EXPR counter++ [L45] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L49] COND FALSE !(!(p != 1)) [L51] d = d / 2 [L52] p = p / 2 [L53] COND TRUE r >= d [L54] r = r - d [L55] q = q + p [L45] EXPR counter++ [L45] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L49] COND FALSE !(!(p != 1)) [L51] d = d / 2 [L52] p = p / 2 [L53] COND TRUE r >= d [L54] r = r - d [L55] q = q + p [L45] EXPR counter++ [L45] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L49] COND TRUE !(p != 1) [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 180.0s, OverallIterations: 28, TraceHistogramMax: 5, AutomataDifference: 146.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 861 SDtfs, 2274 SDslu, 2617 SDs, 0 SdLazy, 3101 SolverSat, 632 SolverUnsat, 35 SolverUnknown, 0 SolverNotchecked, 78.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 877 GetRequests, 575 SyntacticMatches, 2 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 73.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=149occurred in iteration=27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 27 MinimizatonAttempts, 261 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 10.2s InterpolantComputationTime, 783 NumberOfCodeBlocks, 735 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 756 ConstructedInterpolants, 1 QuantifiedInterpolants, 332720 SizeOfPredicates, 187 NumberOfNonLiveVariables, 2972 ConjunctsInSsa, 563 ConjunctsInUnsatCore, 27 InterpolantComputations, 8 PerfectInterpolantSequences, 51/491 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...