/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/hard2_unwindbound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:55:28,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:55:28,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:55:28,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:55:28,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:55:28,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:55:28,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:55:28,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:55:28,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:55:28,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:55:28,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:55:28,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:55:28,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:55:29,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:55:29,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:55:29,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:55:29,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:55:29,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:55:29,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:55:29,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:55:29,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:55:29,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:55:29,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:55:29,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:55:29,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:55:29,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:55:29,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:55:29,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:55:29,052 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 07:55:29,082 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:55:29,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:55:29,083 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:55:29,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:55:29,084 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:55:29,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:55:29,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:55:29,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:55:29,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:55:29,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:55:29,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:55:29,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:55:29,086 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:55:29,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:55:29,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:55:29,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:55:29,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:55:29,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:55:29,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:55:29,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:55:29,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:55:29,088 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:55:29,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:55:29,088 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:55:29,088 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:55:29,089 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:55:29,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:55:29,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:55:29,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:55:29,485 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:55:29,485 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:55:29,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound20.c [2020-12-23 07:55:29,585 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a24561231/8f8a80d6b6dd4ec8bd228e42f890d9ea/FLAG08e349675 [2020-12-23 07:55:30,266 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:55:30,267 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound20.c [2020-12-23 07:55:30,275 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a24561231/8f8a80d6b6dd4ec8bd228e42f890d9ea/FLAG08e349675 [2020-12-23 07:55:30,291 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a24561231/8f8a80d6b6dd4ec8bd228e42f890d9ea [2020-12-23 07:55:30,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:55:30,296 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:55:30,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:55:30,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:55:30,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:55:30,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:55:30" (1/1) ... [2020-12-23 07:55:30,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20c5d437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:30, skipping insertion in model container [2020-12-23 07:55:30,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:55:30" (1/1) ... [2020-12-23 07:55:30,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:55:30,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:55:30,485 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/hard2_unwindbound20.c[526,539] 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 07:55:30,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:55:30,527 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:55:30,540 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/hard2_unwindbound20.c[526,539] 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 07:55:30,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:55:30,565 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:55:30,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:30 WrapperNode [2020-12-23 07:55:30,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:55:30,567 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:55:30,567 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:55:30,567 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:55:30,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:30" (1/1) ... [2020-12-23 07:55:30,584 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:30" (1/1) ... [2020-12-23 07:55:30,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:55:30,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:55:30,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:55:30,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:55:30,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:30" (1/1) ... [2020-12-23 07:55:30,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:30" (1/1) ... [2020-12-23 07:55:30,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:30" (1/1) ... [2020-12-23 07:55:30,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:30" (1/1) ... [2020-12-23 07:55:30,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:30" (1/1) ... [2020-12-23 07:55:30,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:30" (1/1) ... [2020-12-23 07:55:30,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:30" (1/1) ... [2020-12-23 07:55:30,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:55:30,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:55:30,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:55:30,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:55:30,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:55:30,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:55:30,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:55:30,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:55:30,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:55:31,158 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:55:31,159 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2020-12-23 07:55:31,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:55:31 BoogieIcfgContainer [2020-12-23 07:55:31,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:55:31,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:55:31,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:55:31,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:55:31,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:55:30" (1/3) ... [2020-12-23 07:55:31,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65fb1b7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:55:31, skipping insertion in model container [2020-12-23 07:55:31,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:30" (2/3) ... [2020-12-23 07:55:31,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65fb1b7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:55:31, skipping insertion in model container [2020-12-23 07:55:31,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:55:31" (3/3) ... [2020-12-23 07:55:31,178 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_unwindbound20.c [2020-12-23 07:55:31,186 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:55:31,191 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-23 07:55:31,213 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-23 07:55:31,263 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:55:31,263 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:55:31,263 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:55:31,263 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:55:31,263 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:55:31,264 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:55:31,264 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:55:31,264 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:55:31,286 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-12-23 07:55:31,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 07:55:31,299 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:31,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 07:55:31,301 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 07:55:31,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:31,310 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-23 07:55:31,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:31,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584929087] [2020-12-23 07:55:31,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:31,643 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 07:55:31,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584929087] [2020-12-23 07:55:31,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:31,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:55:31,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681012682] [2020-12-23 07:55:31,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:55:31,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:31,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:55:31,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:55:31,675 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2020-12-23 07:55:31,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:31,892 INFO L93 Difference]: Finished difference Result 102 states and 139 transitions. [2020-12-23 07:55:31,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:55:31,894 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-23 07:55:31,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:31,907 INFO L225 Difference]: With dead ends: 102 [2020-12-23 07:55:31,908 INFO L226 Difference]: Without dead ends: 57 [2020-12-23 07:55:31,911 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 07:55:31,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-23 07:55:31,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 33. [2020-12-23 07:55:31,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-23 07:55:31,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-12-23 07:55:31,955 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2020-12-23 07:55:31,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:31,956 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-12-23 07:55:31,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:55:31,956 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-12-23 07:55:31,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 07:55:31,957 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:31,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:31,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:55:31,958 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 07:55:31,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:31,959 INFO L82 PathProgramCache]: Analyzing trace with hash 178921133, now seen corresponding path program 1 times [2020-12-23 07:55:31,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:31,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291060290] [2020-12-23 07:55:31,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:31,975 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:31,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [510742442] [2020-12-23 07:55:31,976 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 07:55:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:32,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 07:55:32,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:32,144 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 07:55:32,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291060290] [2020-12-23 07:55:32,145 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:32,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510742442] [2020-12-23 07:55:32,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:32,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 07:55:32,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184830257] [2020-12-23 07:55:32,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:55:32,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:32,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:55:32,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:55:32,159 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-12-23 07:55:32,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:32,196 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-12-23 07:55:32,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:55:32,197 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-23 07:55:32,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:32,199 INFO L225 Difference]: With dead ends: 54 [2020-12-23 07:55:32,199 INFO L226 Difference]: Without dead ends: 35 [2020-12-23 07:55:32,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 07:55:32,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-23 07:55:32,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-12-23 07:55:32,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 07:55:32,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-23 07:55:32,230 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-12-23 07:55:32,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:32,230 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-23 07:55:32,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:55:32,231 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-23 07:55:32,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 07:55:32,232 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:32,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:32,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 07:55:32,447 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 07:55:32,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:32,449 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2020-12-23 07:55:32,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:32,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338949227] [2020-12-23 07:55:32,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:32,547 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 07:55:32,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338949227] [2020-12-23 07:55:32,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:32,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:55:32,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272028628] [2020-12-23 07:55:32,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:55:32,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:32,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:55:32,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:55:32,552 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-12-23 07:55:32,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:32,651 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-12-23 07:55:32,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:55:32,653 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-23 07:55:32,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:32,655 INFO L225 Difference]: With dead ends: 54 [2020-12-23 07:55:32,656 INFO L226 Difference]: Without dead ends: 52 [2020-12-23 07:55:32,666 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 07:55:32,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-23 07:55:32,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2020-12-23 07:55:32,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-23 07:55:32,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-12-23 07:55:32,682 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 8 [2020-12-23 07:55:32,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:32,682 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-12-23 07:55:32,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:55:32,683 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-12-23 07:55:32,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 07:55:32,683 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:32,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:32,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 07:55:32,684 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 07:55:32,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:32,685 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2020-12-23 07:55:32,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:32,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703429527] [2020-12-23 07:55:32,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:32,723 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:32,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1459870005] [2020-12-23 07:55:32,724 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 07:55:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:32,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 07:55:32,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:32,839 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 07:55:32,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703429527] [2020-12-23 07:55:32,840 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:32,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459870005] [2020-12-23 07:55:32,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:32,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:55:32,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011042474] [2020-12-23 07:55:32,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:55:32,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:32,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:55:32,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:55:32,843 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 6 states. [2020-12-23 07:55:32,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:32,959 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2020-12-23 07:55:32,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:55:32,960 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-23 07:55:32,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:32,962 INFO L225 Difference]: With dead ends: 79 [2020-12-23 07:55:32,962 INFO L226 Difference]: Without dead ends: 56 [2020-12-23 07:55:32,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 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 07:55:32,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-23 07:55:32,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2020-12-23 07:55:32,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-23 07:55:32,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-12-23 07:55:32,974 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 10 [2020-12-23 07:55:32,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:32,974 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-12-23 07:55:32,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:55:32,975 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-12-23 07:55:32,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 07:55:32,975 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:32,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:33,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:33,190 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 07:55:33,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:33,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1265846374, now seen corresponding path program 1 times [2020-12-23 07:55:33,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:33,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409922243] [2020-12-23 07:55:33,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:33,204 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:33,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [266436762] [2020-12-23 07:55:33,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 07:55:33,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:33,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:55:33,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:33,314 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 07:55:33,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409922243] [2020-12-23 07:55:33,315 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:33,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266436762] [2020-12-23 07:55:33,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:33,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:55:33,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024376829] [2020-12-23 07:55:33,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:55:33,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:33,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:55:33,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:55:33,317 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 5 states. [2020-12-23 07:55:33,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:33,370 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2020-12-23 07:55:33,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:55:33,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-23 07:55:33,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:33,371 INFO L225 Difference]: With dead ends: 66 [2020-12-23 07:55:33,371 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 07:55:33,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:55:33,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 07:55:33,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2020-12-23 07:55:33,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-23 07:55:33,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-12-23 07:55:33,378 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 14 [2020-12-23 07:55:33,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:33,379 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-12-23 07:55:33,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:55:33,379 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-12-23 07:55:33,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 07:55:33,380 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:33,380 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 07:55:33,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:33,597 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 07:55:33,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:33,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1486360258, now seen corresponding path program 1 times [2020-12-23 07:55:33,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:33,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692764004] [2020-12-23 07:55:33,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:33,610 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:33,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [710340549] [2020-12-23 07:55:33,611 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 07:55:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:33,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 07:55:33,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:33,710 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 07:55:33,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692764004] [2020-12-23 07:55:33,711 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:33,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710340549] [2020-12-23 07:55:33,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:33,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-23 07:55:33,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458469465] [2020-12-23 07:55:33,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:55:33,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:33,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:55:33,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:55:33,714 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 5 states. [2020-12-23 07:55:33,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:33,741 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2020-12-23 07:55:33,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:55:33,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-23 07:55:33,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:33,743 INFO L225 Difference]: With dead ends: 78 [2020-12-23 07:55:33,743 INFO L226 Difference]: Without dead ends: 50 [2020-12-23 07:55:33,745 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 07:55:33,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-23 07:55:33,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-12-23 07:55:33,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-23 07:55:33,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-12-23 07:55:33,760 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 18 [2020-12-23 07:55:33,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:33,760 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-12-23 07:55:33,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:55:33,761 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-12-23 07:55:33,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 07:55:33,762 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:33,762 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:33,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:33,977 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 07:55:33,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:33,978 INFO L82 PathProgramCache]: Analyzing trace with hash -2100512702, now seen corresponding path program 1 times [2020-12-23 07:55:33,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:33,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409326083] [2020-12-23 07:55:33,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:33,990 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:33,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [85158970] [2020-12-23 07:55:33,993 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 07:55:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:34,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 07:55:34,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:34,142 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 07:55:34,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409326083] [2020-12-23 07:55:34,142 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:34,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85158970] [2020-12-23 07:55:34,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:34,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:55:34,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222690975] [2020-12-23 07:55:34,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:55:34,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:34,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:55:34,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:55:34,145 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 7 states. [2020-12-23 07:55:34,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:34,326 INFO L93 Difference]: Finished difference Result 117 states and 141 transitions. [2020-12-23 07:55:34,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:55:34,326 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-23 07:55:34,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:34,327 INFO L225 Difference]: With dead ends: 117 [2020-12-23 07:55:34,328 INFO L226 Difference]: Without dead ends: 77 [2020-12-23 07:55:34,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:55:34,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-23 07:55:34,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 63. [2020-12-23 07:55:34,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-23 07:55:34,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2020-12-23 07:55:34,337 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 18 [2020-12-23 07:55:34,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:34,337 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2020-12-23 07:55:34,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:55:34,338 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2020-12-23 07:55:34,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 07:55:34,339 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:34,339 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:34,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-23 07:55:34,555 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 07:55:34,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:34,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1057713026, now seen corresponding path program 1 times [2020-12-23 07:55:34,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:34,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075796948] [2020-12-23 07:55:34,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:34,569 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:34,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [789597074] [2020-12-23 07:55:34,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:34,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 07:55:34,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:34,700 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 07:55:34,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075796948] [2020-12-23 07:55:34,700 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:34,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789597074] [2020-12-23 07:55:34,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:34,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:55:34,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481068720] [2020-12-23 07:55:34,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:55:34,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:34,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:55:34,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:55:34,703 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand 6 states. [2020-12-23 07:55:34,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:34,727 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2020-12-23 07:55:34,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:55:34,728 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-12-23 07:55:34,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:34,729 INFO L225 Difference]: With dead ends: 70 [2020-12-23 07:55:34,729 INFO L226 Difference]: Without dead ends: 64 [2020-12-23 07:55:34,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 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 07:55:34,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-23 07:55:34,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-12-23 07:55:34,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-23 07:55:34,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2020-12-23 07:55:34,737 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 25 [2020-12-23 07:55:34,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:34,737 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2020-12-23 07:55:34,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:55:34,737 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2020-12-23 07:55:34,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 07:55:34,738 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:34,738 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 07:55:34,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:34,952 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 07:55:34,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:34,953 INFO L82 PathProgramCache]: Analyzing trace with hash 998694484, now seen corresponding path program 2 times [2020-12-23 07:55:34,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:34,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290117952] [2020-12-23 07:55:34,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:34,965 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:34,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872865859] [2020-12-23 07:55:34,966 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 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 07:55:35,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 07:55:35,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:35,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 07:55:35,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:35,051 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 07:55:35,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290117952] [2020-12-23 07:55:35,052 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:35,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872865859] [2020-12-23 07:55:35,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:35,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:55:35,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183003960] [2020-12-23 07:55:35,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:55:35,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:35,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:55:35,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:55:35,054 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 5 states. [2020-12-23 07:55:35,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:35,090 INFO L93 Difference]: Finished difference Result 99 states and 114 transitions. [2020-12-23 07:55:35,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:55:35,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-12-23 07:55:35,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:35,091 INFO L225 Difference]: With dead ends: 99 [2020-12-23 07:55:35,091 INFO L226 Difference]: Without dead ends: 71 [2020-12-23 07:55:35,096 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 07:55:35,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-23 07:55:35,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2020-12-23 07:55:35,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-23 07:55:35,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2020-12-23 07:55:35,114 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 26 [2020-12-23 07:55:35,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:35,114 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2020-12-23 07:55:35,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:55:35,114 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2020-12-23 07:55:35,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 07:55:35,116 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:35,116 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-12-23 07:55:35,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:35,317 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 07:55:35,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:35,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1706788820, now seen corresponding path program 2 times [2020-12-23 07:55:35,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:35,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410752480] [2020-12-23 07:55:35,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:35,328 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:35,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1074283635] [2020-12-23 07:55:35,329 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 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 07:55:35,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:55:35,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:35,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-23 07:55:35,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:35,505 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 07:55:35,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410752480] [2020-12-23 07:55:35,505 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:35,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074283635] [2020-12-23 07:55:35,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:35,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:55:35,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145560726] [2020-12-23 07:55:35,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:55:35,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:35,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:55:35,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:55:35,507 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand 8 states. [2020-12-23 07:55:35,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:35,747 INFO L93 Difference]: Finished difference Result 138 states and 160 transitions. [2020-12-23 07:55:35,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:55:35,748 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-12-23 07:55:35,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:35,749 INFO L225 Difference]: With dead ends: 138 [2020-12-23 07:55:35,749 INFO L226 Difference]: Without dead ends: 124 [2020-12-23 07:55:35,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:55:35,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-23 07:55:35,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 92. [2020-12-23 07:55:35,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-23 07:55:35,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 108 transitions. [2020-12-23 07:55:35,759 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 108 transitions. Word has length 26 [2020-12-23 07:55:35,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:35,759 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 108 transitions. [2020-12-23 07:55:35,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:55:35,759 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 108 transitions. [2020-12-23 07:55:35,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 07:55:35,760 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:35,760 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 07:55:35,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 07:55:35,974 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 07:55:35,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:35,975 INFO L82 PathProgramCache]: Analyzing trace with hash 864374201, now seen corresponding path program 1 times [2020-12-23 07:55:35,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:35,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144364895] [2020-12-23 07:55:35,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:35,990 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:35,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [90727856] [2020-12-23 07:55:35,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:36,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 07:55:36,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:36,110 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 07:55:36,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144364895] [2020-12-23 07:55:36,110 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:36,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90727856] [2020-12-23 07:55:36,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:36,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:55:36,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910967156] [2020-12-23 07:55:36,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:55:36,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:36,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:55:36,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:55:36,112 INFO L87 Difference]: Start difference. First operand 92 states and 108 transitions. Second operand 6 states. [2020-12-23 07:55:36,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:36,149 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2020-12-23 07:55:36,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:55:36,150 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-23 07:55:36,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:36,151 INFO L225 Difference]: With dead ends: 100 [2020-12-23 07:55:36,151 INFO L226 Difference]: Without dead ends: 92 [2020-12-23 07:55:36,151 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 07:55:36,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-23 07:55:36,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-12-23 07:55:36,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-23 07:55:36,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 107 transitions. [2020-12-23 07:55:36,158 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 107 transitions. Word has length 27 [2020-12-23 07:55:36,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:36,158 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 107 transitions. [2020-12-23 07:55:36,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:55:36,158 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 107 transitions. [2020-12-23 07:55:36,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 07:55:36,159 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:36,160 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] [2020-12-23 07:55:36,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:36,373 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 07:55:36,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:36,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1388472819, now seen corresponding path program 1 times [2020-12-23 07:55:36,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:36,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619779226] [2020-12-23 07:55:36,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:36,384 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:36,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [861127480] [2020-12-23 07:55:36,385 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 07:55:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:36,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 07:55:36,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:36,578 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 07:55:36,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619779226] [2020-12-23 07:55:36,578 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:36,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861127480] [2020-12-23 07:55:36,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:36,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:55:36,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415979034] [2020-12-23 07:55:36,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:55:36,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:36,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:55:36,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:55:36,580 INFO L87 Difference]: Start difference. First operand 92 states and 107 transitions. Second operand 7 states. [2020-12-23 07:55:36,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:36,745 INFO L93 Difference]: Finished difference Result 114 states and 132 transitions. [2020-12-23 07:55:36,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:55:36,745 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-12-23 07:55:36,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:36,746 INFO L225 Difference]: With dead ends: 114 [2020-12-23 07:55:36,747 INFO L226 Difference]: Without dead ends: 112 [2020-12-23 07:55:36,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:55:36,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-12-23 07:55:36,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 99. [2020-12-23 07:55:36,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-23 07:55:36,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2020-12-23 07:55:36,754 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 29 [2020-12-23 07:55:36,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:36,754 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2020-12-23 07:55:36,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:55:36,755 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2020-12-23 07:55:36,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 07:55:36,756 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:36,756 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] [2020-12-23 07:55:36,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:36,970 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 07:55:36,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:36,971 INFO L82 PathProgramCache]: Analyzing trace with hash -93011142, now seen corresponding path program 1 times [2020-12-23 07:55:36,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:36,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292579261] [2020-12-23 07:55:36,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:36,980 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:36,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1047482627] [2020-12-23 07:55:36,981 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 07:55:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:37,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 07:55:37,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:37,146 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 07:55:37,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292579261] [2020-12-23 07:55:37,146 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:37,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047482627] [2020-12-23 07:55:37,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:37,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 07:55:37,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717128985] [2020-12-23 07:55:37,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:55:37,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:37,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:55:37,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:55:37,148 INFO L87 Difference]: Start difference. First operand 99 states and 118 transitions. Second operand 7 states. [2020-12-23 07:55:37,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:37,186 INFO L93 Difference]: Finished difference Result 112 states and 131 transitions. [2020-12-23 07:55:37,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:55:37,186 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-12-23 07:55:37,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:37,187 INFO L225 Difference]: With dead ends: 112 [2020-12-23 07:55:37,187 INFO L226 Difference]: Without dead ends: 102 [2020-12-23 07:55:37,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 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 07:55:37,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-23 07:55:37,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-12-23 07:55:37,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-23 07:55:37,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 119 transitions. [2020-12-23 07:55:37,196 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 119 transitions. Word has length 30 [2020-12-23 07:55:37,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:37,196 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 119 transitions. [2020-12-23 07:55:37,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:55:37,196 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 119 transitions. [2020-12-23 07:55:37,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:55:37,197 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:37,197 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] [2020-12-23 07:55:37,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 07:55:37,410 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 07:55:37,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:37,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1412607120, now seen corresponding path program 1 times [2020-12-23 07:55:37,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:37,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860493054] [2020-12-23 07:55:37,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:37,423 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:37,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2141173457] [2020-12-23 07:55:37,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:37,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-23 07:55:37,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:37,636 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 07:55:37,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860493054] [2020-12-23 07:55:37,636 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:37,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141173457] [2020-12-23 07:55:37,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:37,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:55:37,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725275304] [2020-12-23 07:55:37,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:55:37,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:37,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:55:37,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:55:37,638 INFO L87 Difference]: Start difference. First operand 101 states and 119 transitions. Second operand 8 states. [2020-12-23 07:55:37,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:37,812 INFO L93 Difference]: Finished difference Result 130 states and 152 transitions. [2020-12-23 07:55:37,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:55:37,812 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-23 07:55:37,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:37,815 INFO L225 Difference]: With dead ends: 130 [2020-12-23 07:55:37,815 INFO L226 Difference]: Without dead ends: 102 [2020-12-23 07:55:37,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:55:37,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-23 07:55:37,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-12-23 07:55:37,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-23 07:55:37,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-12-23 07:55:37,827 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 31 [2020-12-23 07:55:37,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:37,827 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-12-23 07:55:37,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:55:37,827 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-12-23 07:55:37,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 07:55:37,828 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:37,828 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2020-12-23 07:55:38,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 07:55:38,044 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 07:55:38,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:38,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1601348966, now seen corresponding path program 3 times [2020-12-23 07:55:38,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:38,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524908152] [2020-12-23 07:55:38,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:38,055 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:38,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1890562167] [2020-12-23 07:55:38,056 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 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 07:55:38,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:55:38,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:38,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-23 07:55:38,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:38,272 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 07:55:38,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524908152] [2020-12-23 07:55:38,272 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:38,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890562167] [2020-12-23 07:55:38,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:38,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:55:38,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709632939] [2020-12-23 07:55:38,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:55:38,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:38,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:55:38,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:55:38,274 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 9 states. [2020-12-23 07:55:38,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:38,533 INFO L93 Difference]: Finished difference Result 122 states and 136 transitions. [2020-12-23 07:55:38,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:55:38,534 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-12-23 07:55:38,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:38,535 INFO L225 Difference]: With dead ends: 122 [2020-12-23 07:55:38,535 INFO L226 Difference]: Without dead ends: 112 [2020-12-23 07:55:38,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2020-12-23 07:55:38,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-12-23 07:55:38,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 96. [2020-12-23 07:55:38,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-23 07:55:38,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 109 transitions. [2020-12-23 07:55:38,546 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 109 transitions. Word has length 34 [2020-12-23 07:55:38,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:38,547 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 109 transitions. [2020-12-23 07:55:38,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:55:38,547 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 109 transitions. [2020-12-23 07:55:38,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 07:55:38,547 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:38,548 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] [2020-12-23 07:55:38,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-23 07:55:38,761 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 07:55:38,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:38,762 INFO L82 PathProgramCache]: Analyzing trace with hash 894098064, now seen corresponding path program 1 times [2020-12-23 07:55:38,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:38,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000831539] [2020-12-23 07:55:38,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:38,772 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:38,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1018513134] [2020-12-23 07:55:38,772 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 07:55:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:38,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-23 07:55:38,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:38,948 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 07:55:38,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000831539] [2020-12-23 07:55:38,949 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:38,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018513134] [2020-12-23 07:55:38,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:38,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:55:38,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914731786] [2020-12-23 07:55:38,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:55:38,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:38,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:55:38,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:55:38,951 INFO L87 Difference]: Start difference. First operand 96 states and 109 transitions. Second operand 8 states. [2020-12-23 07:55:39,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:39,083 INFO L93 Difference]: Finished difference Result 98 states and 110 transitions. [2020-12-23 07:55:39,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:55:39,083 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-12-23 07:55:39,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:39,084 INFO L225 Difference]: With dead ends: 98 [2020-12-23 07:55:39,084 INFO L226 Difference]: Without dead ends: 81 [2020-12-23 07:55:39,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:55:39,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-23 07:55:39,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-12-23 07:55:39,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-23 07:55:39,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2020-12-23 07:55:39,094 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 34 [2020-12-23 07:55:39,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:39,095 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2020-12-23 07:55:39,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:55:39,095 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2020-12-23 07:55:39,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-23 07:55:39,095 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:39,096 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:39,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:39,309 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 07:55:39,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:39,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1890706023, now seen corresponding path program 2 times [2020-12-23 07:55:39,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:39,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022274408] [2020-12-23 07:55:39,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:39,318 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:39,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1912176488] [2020-12-23 07:55:39,319 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 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 07:55:39,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:55:39,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:39,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 07:55:39,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:39,479 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 07:55:39,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022274408] [2020-12-23 07:55:39,479 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:39,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912176488] [2020-12-23 07:55:39,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:39,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 07:55:39,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168500128] [2020-12-23 07:55:39,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:55:39,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:39,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:55:39,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:55:39,481 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand 7 states. [2020-12-23 07:55:39,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:39,535 INFO L93 Difference]: Finished difference Result 91 states and 103 transitions. [2020-12-23 07:55:39,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:55:39,536 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-12-23 07:55:39,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:39,536 INFO L225 Difference]: With dead ends: 91 [2020-12-23 07:55:39,537 INFO L226 Difference]: Without dead ends: 83 [2020-12-23 07:55:39,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 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 07:55:39,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-23 07:55:39,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-12-23 07:55:39,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-23 07:55:39,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2020-12-23 07:55:39,547 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 35 [2020-12-23 07:55:39,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:39,547 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2020-12-23 07:55:39,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:55:39,548 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2020-12-23 07:55:39,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 07:55:39,548 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:39,548 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] [2020-12-23 07:55:39,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-23 07:55:39,763 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 07:55:39,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:39,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1368897339, now seen corresponding path program 2 times [2020-12-23 07:55:39,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:39,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422954678] [2020-12-23 07:55:39,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:39,774 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:39,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [418791000] [2020-12-23 07:55:39,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:39,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:55:39,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:39,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-23 07:55:39,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:39,993 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 07:55:39,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422954678] [2020-12-23 07:55:39,993 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:39,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418791000] [2020-12-23 07:55:39,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:39,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:55:39,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820473193] [2020-12-23 07:55:39,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:55:39,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:39,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:55:39,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:55:39,996 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand 8 states. [2020-12-23 07:55:40,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:40,309 INFO L93 Difference]: Finished difference Result 151 states and 175 transitions. [2020-12-23 07:55:40,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:55:40,310 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2020-12-23 07:55:40,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:40,312 INFO L225 Difference]: With dead ends: 151 [2020-12-23 07:55:40,312 INFO L226 Difference]: Without dead ends: 115 [2020-12-23 07:55:40,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:55:40,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-23 07:55:40,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 97. [2020-12-23 07:55:40,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-23 07:55:40,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 112 transitions. [2020-12-23 07:55:40,322 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 112 transitions. Word has length 37 [2020-12-23 07:55:40,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:40,322 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 112 transitions. [2020-12-23 07:55:40,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:55:40,322 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 112 transitions. [2020-12-23 07:55:40,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-23 07:55:40,323 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:40,323 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] [2020-12-23 07:55:40,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-23 07:55:40,537 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 07:55:40,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:40,538 INFO L82 PathProgramCache]: Analyzing trace with hash -513882164, now seen corresponding path program 2 times [2020-12-23 07:55:40,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:40,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312894537] [2020-12-23 07:55:40,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:40,547 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:40,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [450931866] [2020-12-23 07:55:40,547 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 07:55:40,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:55:40,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:40,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 07:55:40,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:40,710 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 07:55:40,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312894537] [2020-12-23 07:55:40,710 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:40,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450931866] [2020-12-23 07:55:40,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:40,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:55:40,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028317378] [2020-12-23 07:55:40,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:55:40,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:40,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:55:40,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:55:40,712 INFO L87 Difference]: Start difference. First operand 97 states and 112 transitions. Second operand 8 states. [2020-12-23 07:55:40,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:40,755 INFO L93 Difference]: Finished difference Result 116 states and 132 transitions. [2020-12-23 07:55:40,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:55:40,756 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-12-23 07:55:40,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:40,757 INFO L225 Difference]: With dead ends: 116 [2020-12-23 07:55:40,757 INFO L226 Difference]: Without dead ends: 106 [2020-12-23 07:55:40,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 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 07:55:40,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-23 07:55:40,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-12-23 07:55:40,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-12-23 07:55:40,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 119 transitions. [2020-12-23 07:55:40,767 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 119 transitions. Word has length 38 [2020-12-23 07:55:40,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:40,767 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 119 transitions. [2020-12-23 07:55:40,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:55:40,767 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 119 transitions. [2020-12-23 07:55:40,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-23 07:55:40,768 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:40,768 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:40,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:40,983 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 07:55:40,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:40,984 INFO L82 PathProgramCache]: Analyzing trace with hash 411953429, now seen corresponding path program 3 times [2020-12-23 07:55:40,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:40,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587614154] [2020-12-23 07:55:40,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:41,000 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:41,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1090083833] [2020-12-23 07:55:41,001 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 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 07:55:41,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-12-23 07:55:41,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:41,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 07:55:41,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:41,146 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 07:55:41,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587614154] [2020-12-23 07:55:41,146 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:41,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090083833] [2020-12-23 07:55:41,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:41,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:55:41,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803783247] [2020-12-23 07:55:41,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:55:41,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:41,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:55:41,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:55:41,148 INFO L87 Difference]: Start difference. First operand 105 states and 119 transitions. Second operand 8 states. [2020-12-23 07:55:41,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:41,211 INFO L93 Difference]: Finished difference Result 115 states and 129 transitions. [2020-12-23 07:55:41,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:55:41,211 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-12-23 07:55:41,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:41,212 INFO L225 Difference]: With dead ends: 115 [2020-12-23 07:55:41,212 INFO L226 Difference]: Without dead ends: 107 [2020-12-23 07:55:41,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 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 07:55:41,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-23 07:55:41,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-12-23 07:55:41,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-23 07:55:41,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 121 transitions. [2020-12-23 07:55:41,221 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 121 transitions. Word has length 43 [2020-12-23 07:55:41,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:41,222 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 121 transitions. [2020-12-23 07:55:41,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:55:41,222 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 121 transitions. [2020-12-23 07:55:41,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 07:55:41,223 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:41,223 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] [2020-12-23 07:55:41,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:41,437 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 07:55:41,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:41,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1687535646, now seen corresponding path program 3 times [2020-12-23 07:55:41,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:41,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042702692] [2020-12-23 07:55:41,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:41,447 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:41,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1205473367] [2020-12-23 07:55:41,447 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 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 07:55:41,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:55:41,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:41,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 42 conjunts are in the unsatisfiable core [2020-12-23 07:55:41,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:41,711 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:55:41,726 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 07:55:41,735 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 07:55:41,756 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 07:55:41,758 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 07:55:41,765 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 07:55:41,774 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 07:55:41,777 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 07:55:41,792 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 07:55:41,800 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 07:55:41,809 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 07:55:41,812 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 07:55:41,818 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 07:55:41,826 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 07:55:41,830 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 07:55:42,315 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-23 07:55:42,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042702692] [2020-12-23 07:55:42,317 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:42,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205473367] [2020-12-23 07:55:42,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:42,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:55:42,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055696063] [2020-12-23 07:55:42,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:55:42,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:42,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:55:42,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:55:42,319 INFO L87 Difference]: Start difference. First operand 107 states and 121 transitions. Second operand 10 states. [2020-12-23 07:55:42,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:42,535 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2020-12-23 07:55:42,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:55:42,535 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-12-23 07:55:42,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:42,536 INFO L225 Difference]: With dead ends: 111 [2020-12-23 07:55:42,536 INFO L226 Difference]: Without dead ends: 109 [2020-12-23 07:55:42,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:55:42,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-23 07:55:42,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 98. [2020-12-23 07:55:42,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-23 07:55:42,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2020-12-23 07:55:42,547 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 44 [2020-12-23 07:55:42,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:42,547 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2020-12-23 07:55:42,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:55:42,548 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2020-12-23 07:55:42,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-23 07:55:42,548 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:42,548 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] [2020-12-23 07:55:42,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:42,762 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 07:55:42,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:42,763 INFO L82 PathProgramCache]: Analyzing trace with hash 773970761, now seen corresponding path program 3 times [2020-12-23 07:55:42,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:42,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027149100] [2020-12-23 07:55:42,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:42,772 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:42,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [916990827] [2020-12-23 07:55:42,772 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 07:55:42,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 07:55:42,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:42,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-23 07:55:42,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:42,966 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 07:55:42,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027149100] [2020-12-23 07:55:42,967 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:42,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916990827] [2020-12-23 07:55:42,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:42,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:55:42,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754421493] [2020-12-23 07:55:42,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:55:42,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:42,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:55:42,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:55:42,969 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand 9 states. [2020-12-23 07:55:43,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:43,029 INFO L93 Difference]: Finished difference Result 127 states and 143 transitions. [2020-12-23 07:55:43,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:55:43,030 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-12-23 07:55:43,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:43,031 INFO L225 Difference]: With dead ends: 127 [2020-12-23 07:55:43,031 INFO L226 Difference]: Without dead ends: 117 [2020-12-23 07:55:43,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 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 07:55:43,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-12-23 07:55:43,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2020-12-23 07:55:43,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-23 07:55:43,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 130 transitions. [2020-12-23 07:55:43,043 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 130 transitions. Word has length 45 [2020-12-23 07:55:43,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:43,043 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 130 transitions. [2020-12-23 07:55:43,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:55:43,043 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 130 transitions. [2020-12-23 07:55:43,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-23 07:55:43,044 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:43,044 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] [2020-12-23 07:55:43,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-23 07:55:43,260 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 07:55:43,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:43,260 INFO L82 PathProgramCache]: Analyzing trace with hash 494883615, now seen corresponding path program 2 times [2020-12-23 07:55:43,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:43,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719059945] [2020-12-23 07:55:43,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:43,279 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:43,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1750710524] [2020-12-23 07:55:43,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:43,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 07:55:43,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:43,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 07:55:43,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:43,518 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-12-23 07:55:43,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719059945] [2020-12-23 07:55:43,519 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:43,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750710524] [2020-12-23 07:55:43,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:43,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:55:43,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698990695] [2020-12-23 07:55:43,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:55:43,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:43,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:55:43,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:55:43,522 INFO L87 Difference]: Start difference. First operand 116 states and 130 transitions. Second operand 11 states. [2020-12-23 07:55:43,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:43,946 INFO L93 Difference]: Finished difference Result 132 states and 144 transitions. [2020-12-23 07:55:43,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:55:43,947 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-12-23 07:55:43,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:43,948 INFO L225 Difference]: With dead ends: 132 [2020-12-23 07:55:43,948 INFO L226 Difference]: Without dead ends: 120 [2020-12-23 07:55:43,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:55:43,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-12-23 07:55:43,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 108. [2020-12-23 07:55:43,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-23 07:55:43,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2020-12-23 07:55:43,960 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 49 [2020-12-23 07:55:43,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:43,960 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2020-12-23 07:55:43,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:55:43,960 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2020-12-23 07:55:43,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-23 07:55:43,961 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:43,961 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:44,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-23 07:55:44,175 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 07:55:44,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:44,176 INFO L82 PathProgramCache]: Analyzing trace with hash -2054725181, now seen corresponding path program 4 times [2020-12-23 07:55:44,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:44,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619757552] [2020-12-23 07:55:44,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:44,186 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:44,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1996333] [2020-12-23 07:55:44,186 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 07:55:44,247 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 07:55:44,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:44,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-23 07:55:44,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:44,356 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:44,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619757552] [2020-12-23 07:55:44,357 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:44,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996333] [2020-12-23 07:55:44,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:44,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:55:44,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719912976] [2020-12-23 07:55:44,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:55:44,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:44,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:55:44,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:55:44,359 INFO L87 Difference]: Start difference. First operand 108 states and 119 transitions. Second operand 9 states. [2020-12-23 07:55:44,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:44,466 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2020-12-23 07:55:44,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:55:44,467 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-12-23 07:55:44,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:44,468 INFO L225 Difference]: With dead ends: 118 [2020-12-23 07:55:44,468 INFO L226 Difference]: Without dead ends: 110 [2020-12-23 07:55:44,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-12-23 07:55:44,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-12-23 07:55:44,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-12-23 07:55:44,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-12-23 07:55:44,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2020-12-23 07:55:44,482 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 51 [2020-12-23 07:55:44,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:44,482 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2020-12-23 07:55:44,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:55:44,482 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2020-12-23 07:55:44,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-23 07:55:44,483 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:44,483 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:44,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:44,698 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 07:55:44,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:44,699 INFO L82 PathProgramCache]: Analyzing trace with hash -12168916, now seen corresponding path program 4 times [2020-12-23 07:55:44,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:44,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454602335] [2020-12-23 07:55:44,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:44,708 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:44,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1470593898] [2020-12-23 07:55:44,708 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 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 07:55:44,969 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 07:55:44,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:44,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-23 07:55:44,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:45,103 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 07:55:45,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454602335] [2020-12-23 07:55:45,103 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:45,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470593898] [2020-12-23 07:55:45,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:45,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:55:45,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874607116] [2020-12-23 07:55:45,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:55:45,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:45,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:55:45,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:55:45,105 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand 10 states. [2020-12-23 07:55:45,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:45,197 INFO L93 Difference]: Finished difference Result 141 states and 156 transitions. [2020-12-23 07:55:45,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 07:55:45,198 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-12-23 07:55:45,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:45,199 INFO L225 Difference]: With dead ends: 141 [2020-12-23 07:55:45,199 INFO L226 Difference]: Without dead ends: 131 [2020-12-23 07:55:45,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:55:45,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-23 07:55:45,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2020-12-23 07:55:45,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-23 07:55:45,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 144 transitions. [2020-12-23 07:55:45,214 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 144 transitions. Word has length 52 [2020-12-23 07:55:45,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:45,214 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 144 transitions. [2020-12-23 07:55:45,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:55:45,214 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 144 transitions. [2020-12-23 07:55:45,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-23 07:55:45,215 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:45,215 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:45,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-23 07:55:45,430 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 07:55:45,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:45,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1005826959, now seen corresponding path program 5 times [2020-12-23 07:55:45,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:45,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364625674] [2020-12-23 07:55:45,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:45,443 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:45,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2049369182] [2020-12-23 07:55:45,444 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 07:55:45,518 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-12-23 07:55:45,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:45,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-23 07:55:45,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:45,631 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:45,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364625674] [2020-12-23 07:55:45,631 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:45,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049369182] [2020-12-23 07:55:45,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:45,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:55:45,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289459150] [2020-12-23 07:55:45,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:55:45,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:45,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:55:45,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:55:45,634 INFO L87 Difference]: Start difference. First operand 130 states and 144 transitions. Second operand 10 states. [2020-12-23 07:55:45,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:45,746 INFO L93 Difference]: Finished difference Result 140 states and 154 transitions. [2020-12-23 07:55:45,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 07:55:45,747 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-12-23 07:55:45,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:45,748 INFO L225 Difference]: With dead ends: 140 [2020-12-23 07:55:45,748 INFO L226 Difference]: Without dead ends: 132 [2020-12-23 07:55:45,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2020-12-23 07:55:45,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-12-23 07:55:45,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-12-23 07:55:45,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-23 07:55:45,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 146 transitions. [2020-12-23 07:55:45,761 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 146 transitions. Word has length 59 [2020-12-23 07:55:45,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:45,762 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 146 transitions. [2020-12-23 07:55:45,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:55:45,762 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 146 transitions. [2020-12-23 07:55:45,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-23 07:55:45,763 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:45,763 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:45,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:45,978 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 07:55:45,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:45,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1674511849, now seen corresponding path program 5 times [2020-12-23 07:55:45,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:45,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873645284] [2020-12-23 07:55:45,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:45,988 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:45,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2109624819] [2020-12-23 07:55:45,988 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:46,104 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-12-23 07:55:46,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:46,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:55:46,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:46,268 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:46,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873645284] [2020-12-23 07:55:46,269 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:46,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109624819] [2020-12-23 07:55:46,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:46,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:55:46,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956193802] [2020-12-23 07:55:46,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:55:46,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:46,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:55:46,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:55:46,271 INFO L87 Difference]: Start difference. First operand 132 states and 146 transitions. Second operand 11 states. [2020-12-23 07:55:46,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:46,377 INFO L93 Difference]: Finished difference Result 163 states and 181 transitions. [2020-12-23 07:55:46,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 07:55:46,378 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-12-23 07:55:46,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:46,380 INFO L225 Difference]: With dead ends: 163 [2020-12-23 07:55:46,380 INFO L226 Difference]: Without dead ends: 153 [2020-12-23 07:55:46,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:55:46,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-12-23 07:55:46,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2020-12-23 07:55:46,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-12-23 07:55:46,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 169 transitions. [2020-12-23 07:55:46,397 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 169 transitions. Word has length 59 [2020-12-23 07:55:46,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:46,397 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 169 transitions. [2020-12-23 07:55:46,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:55:46,397 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 169 transitions. [2020-12-23 07:55:46,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-23 07:55:46,398 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:46,398 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:46,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-23 07:55:46,612 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 07:55:46,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:46,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1527902860, now seen corresponding path program 6 times [2020-12-23 07:55:46,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:46,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635407094] [2020-12-23 07:55:46,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:46,621 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:46,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1051341366] [2020-12-23 07:55:46,621 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:46,726 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-12-23 07:55:46,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:46,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 07:55:46,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:46,874 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:46,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635407094] [2020-12-23 07:55:46,874 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:46,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051341366] [2020-12-23 07:55:46,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:46,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:55:46,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3300326] [2020-12-23 07:55:46,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 07:55:46,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:46,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 07:55:46,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:55:46,876 INFO L87 Difference]: Start difference. First operand 152 states and 169 transitions. Second operand 12 states. [2020-12-23 07:55:47,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:47,002 INFO L93 Difference]: Finished difference Result 187 states and 209 transitions. [2020-12-23 07:55:47,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 07:55:47,002 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-12-23 07:55:47,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:47,004 INFO L225 Difference]: With dead ends: 187 [2020-12-23 07:55:47,004 INFO L226 Difference]: Without dead ends: 175 [2020-12-23 07:55:47,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2020-12-23 07:55:47,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-12-23 07:55:47,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2020-12-23 07:55:47,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-12-23 07:55:47,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 194 transitions. [2020-12-23 07:55:47,021 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 194 transitions. Word has length 66 [2020-12-23 07:55:47,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:47,021 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 194 transitions. [2020-12-23 07:55:47,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 07:55:47,021 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 194 transitions. [2020-12-23 07:55:47,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 07:55:47,022 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:47,022 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:47,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-23 07:55:47,236 INFO L429 AbstractCegarLoop]: === Iteration 29 === [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 07:55:47,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:47,237 INFO L82 PathProgramCache]: Analyzing trace with hash -817031031, now seen corresponding path program 7 times [2020-12-23 07:55:47,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:47,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086407545] [2020-12-23 07:55:47,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:47,245 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:47,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1715545876] [2020-12-23 07:55:47,246 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:47,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-23 07:55:47,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:47,535 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:47,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086407545] [2020-12-23 07:55:47,536 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:47,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715545876] [2020-12-23 07:55:47,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:47,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-23 07:55:47,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134981178] [2020-12-23 07:55:47,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 07:55:47,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:47,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 07:55:47,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:55:47,538 INFO L87 Difference]: Start difference. First operand 174 states and 194 transitions. Second operand 13 states. [2020-12-23 07:55:47,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:47,689 INFO L93 Difference]: Finished difference Result 209 states and 234 transitions. [2020-12-23 07:55:47,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-23 07:55:47,689 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 73 [2020-12-23 07:55:47,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:47,691 INFO L225 Difference]: With dead ends: 209 [2020-12-23 07:55:47,691 INFO L226 Difference]: Without dead ends: 197 [2020-12-23 07:55:47,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=220, Unknown=0, NotChecked=0, Total=342 [2020-12-23 07:55:47,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-12-23 07:55:47,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2020-12-23 07:55:47,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-12-23 07:55:47,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 219 transitions. [2020-12-23 07:55:47,710 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 219 transitions. Word has length 73 [2020-12-23 07:55:47,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:47,710 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 219 transitions. [2020-12-23 07:55:47,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 07:55:47,710 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 219 transitions. [2020-12-23 07:55:47,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-23 07:55:47,711 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:47,711 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:47,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-23 07:55:47,926 INFO L429 AbstractCegarLoop]: === Iteration 30 === [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 07:55:47,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:47,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1740090348, now seen corresponding path program 8 times [2020-12-23 07:55:47,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:47,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703904146] [2020-12-23 07:55:47,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:47,935 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:47,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1092635997] [2020-12-23 07:55:47,935 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 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:48,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:55:48,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:48,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-23 07:55:48,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:48,216 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:48,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703904146] [2020-12-23 07:55:48,217 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:48,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092635997] [2020-12-23 07:55:48,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:48,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-23 07:55:48,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358292224] [2020-12-23 07:55:48,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-23 07:55:48,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:48,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-23 07:55:48,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-12-23 07:55:48,218 INFO L87 Difference]: Start difference. First operand 196 states and 219 transitions. Second operand 14 states. [2020-12-23 07:55:48,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:48,376 INFO L93 Difference]: Finished difference Result 231 states and 259 transitions. [2020-12-23 07:55:48,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-23 07:55:48,377 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 80 [2020-12-23 07:55:48,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:48,378 INFO L225 Difference]: With dead ends: 231 [2020-12-23 07:55:48,378 INFO L226 Difference]: Without dead ends: 219 [2020-12-23 07:55:48,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=150, Invalid=270, Unknown=0, NotChecked=0, Total=420 [2020-12-23 07:55:48,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-12-23 07:55:48,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 218. [2020-12-23 07:55:48,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-12-23 07:55:48,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 244 transitions. [2020-12-23 07:55:48,397 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 244 transitions. Word has length 80 [2020-12-23 07:55:48,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:48,398 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 244 transitions. [2020-12-23 07:55:48,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-23 07:55:48,398 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 244 transitions. [2020-12-23 07:55:48,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-23 07:55:48,399 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:48,399 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:48,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:48,611 INFO L429 AbstractCegarLoop]: === Iteration 31 === [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 07:55:48,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:48,612 INFO L82 PathProgramCache]: Analyzing trace with hash -588901591, now seen corresponding path program 9 times [2020-12-23 07:55:48,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:48,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251371847] [2020-12-23 07:55:48,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:48,620 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:48,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [326696221] [2020-12-23 07:55:48,621 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 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:48,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-12-23 07:55:48,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:48,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 07:55:48,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:49,091 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 0 proven. 236 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:49,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251371847] [2020-12-23 07:55:49,092 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:49,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326696221] [2020-12-23 07:55:49,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:49,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-12-23 07:55:49,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261959048] [2020-12-23 07:55:49,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 07:55:49,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:49,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 07:55:49,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:55:49,093 INFO L87 Difference]: Start difference. First operand 218 states and 244 transitions. Second operand 15 states. [2020-12-23 07:55:49,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:49,292 INFO L93 Difference]: Finished difference Result 253 states and 284 transitions. [2020-12-23 07:55:49,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-23 07:55:49,293 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 87 [2020-12-23 07:55:49,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:49,294 INFO L225 Difference]: With dead ends: 253 [2020-12-23 07:55:49,295 INFO L226 Difference]: Without dead ends: 241 [2020-12-23 07:55:49,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=181, Invalid=325, Unknown=0, NotChecked=0, Total=506 [2020-12-23 07:55:49,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-12-23 07:55:49,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 240. [2020-12-23 07:55:49,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-12-23 07:55:49,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 269 transitions. [2020-12-23 07:55:49,317 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 269 transitions. Word has length 87 [2020-12-23 07:55:49,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:49,317 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 269 transitions. [2020-12-23 07:55:49,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 07:55:49,317 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 269 transitions. [2020-12-23 07:55:49,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-23 07:55:49,318 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:49,319 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:49,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-12-23 07:55:49,534 INFO L429 AbstractCegarLoop]: === Iteration 32 === [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 07:55:49,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:49,534 INFO L82 PathProgramCache]: Analyzing trace with hash 833453388, now seen corresponding path program 10 times [2020-12-23 07:55:49,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:49,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292824637] [2020-12-23 07:55:49,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:49,542 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:49,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1381850361] [2020-12-23 07:55:49,543 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 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:49,727 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 07:55:49,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:49,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 07:55:49,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:49,996 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:49,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292824637] [2020-12-23 07:55:49,997 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:49,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381850361] [2020-12-23 07:55:49,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:49,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-12-23 07:55:49,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552133528] [2020-12-23 07:55:50,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 07:55:50,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:50,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 07:55:50,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-12-23 07:55:50,002 INFO L87 Difference]: Start difference. First operand 240 states and 269 transitions. Second operand 16 states. [2020-12-23 07:55:50,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:50,243 INFO L93 Difference]: Finished difference Result 275 states and 309 transitions. [2020-12-23 07:55:50,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-23 07:55:50,243 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 94 [2020-12-23 07:55:50,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:50,245 INFO L225 Difference]: With dead ends: 275 [2020-12-23 07:55:50,246 INFO L226 Difference]: Without dead ends: 263 [2020-12-23 07:55:50,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=215, Invalid=385, Unknown=0, NotChecked=0, Total=600 [2020-12-23 07:55:50,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-12-23 07:55:50,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 262. [2020-12-23 07:55:50,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-12-23 07:55:50,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 294 transitions. [2020-12-23 07:55:50,276 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 294 transitions. Word has length 94 [2020-12-23 07:55:50,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:50,276 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 294 transitions. [2020-12-23 07:55:50,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 07:55:50,276 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 294 transitions. [2020-12-23 07:55:50,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-23 07:55:50,278 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:50,278 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:50,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:50,484 INFO L429 AbstractCegarLoop]: === Iteration 33 === [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 07:55:50,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:50,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1352403511, now seen corresponding path program 11 times [2020-12-23 07:55:50,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:50,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869894140] [2020-12-23 07:55:50,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:50,494 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:50,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [753769041] [2020-12-23 07:55:50,495 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:58:58,777 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-12-23 07:58:58,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:58:58,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-23 07:58:58,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:58:59,079 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 0 proven. 359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:58:59,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869894140] [2020-12-23 07:58:59,081 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:58:59,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753769041] [2020-12-23 07:58:59,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:58:59,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-12-23 07:58:59,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315167975] [2020-12-23 07:58:59,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-23 07:58:59,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:58:59,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-23 07:58:59,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-12-23 07:58:59,084 INFO L87 Difference]: Start difference. First operand 262 states and 294 transitions. Second operand 17 states. [2020-12-23 07:58:59,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:58:59,320 INFO L93 Difference]: Finished difference Result 297 states and 334 transitions. [2020-12-23 07:58:59,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-23 07:58:59,320 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 101 [2020-12-23 07:58:59,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:58:59,322 INFO L225 Difference]: With dead ends: 297 [2020-12-23 07:58:59,322 INFO L226 Difference]: Without dead ends: 285 [2020-12-23 07:58:59,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=252, Invalid=450, Unknown=0, NotChecked=0, Total=702 [2020-12-23 07:58:59,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-12-23 07:58:59,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 284. [2020-12-23 07:58:59,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-12-23 07:58:59,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 319 transitions. [2020-12-23 07:58:59,352 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 319 transitions. Word has length 101 [2020-12-23 07:58:59,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:58:59,352 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 319 transitions. [2020-12-23 07:58:59,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-23 07:58:59,353 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 319 transitions. [2020-12-23 07:58:59,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-23 07:58:59,354 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:58:59,354 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:58:59,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-12-23 07:58:59,555 INFO L429 AbstractCegarLoop]: === Iteration 34 === [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 07:58:59,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:58:59,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1092000084, now seen corresponding path program 12 times [2020-12-23 07:58:59,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:58:59,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434908599] [2020-12-23 07:58:59,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:58:59,565 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:58:59,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1752204674] [2020-12-23 07:58:59,566 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:59:00,182 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-12-23 07:59:00,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:59:00,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-23 07:59:00,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:59:00,460 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:59:00,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434908599] [2020-12-23 07:59:00,461 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:59:00,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752204674] [2020-12-23 07:59:00,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:59:00,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-12-23 07:59:00,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490949122] [2020-12-23 07:59:00,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-23 07:59:00,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:59:00,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-23 07:59:00,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:59:00,463 INFO L87 Difference]: Start difference. First operand 284 states and 319 transitions. Second operand 18 states. [2020-12-23 07:59:00,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:59:00,721 INFO L93 Difference]: Finished difference Result 319 states and 359 transitions. [2020-12-23 07:59:00,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-23 07:59:00,722 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 108 [2020-12-23 07:59:00,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:59:00,724 INFO L225 Difference]: With dead ends: 319 [2020-12-23 07:59:00,724 INFO L226 Difference]: Without dead ends: 307 [2020-12-23 07:59:00,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=292, Invalid=520, Unknown=0, NotChecked=0, Total=812 [2020-12-23 07:59:00,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-12-23 07:59:00,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 306. [2020-12-23 07:59:00,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-12-23 07:59:00,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 344 transitions. [2020-12-23 07:59:00,751 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 344 transitions. Word has length 108 [2020-12-23 07:59:00,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:59:00,751 INFO L481 AbstractCegarLoop]: Abstraction has 306 states and 344 transitions. [2020-12-23 07:59:00,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-23 07:59:00,751 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 344 transitions. [2020-12-23 07:59:00,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-23 07:59:00,753 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:59:00,753 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:59:00,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-12-23 07:59:00,969 INFO L429 AbstractCegarLoop]: === Iteration 35 === [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 07:59:00,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:59:00,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1072643991, now seen corresponding path program 13 times [2020-12-23 07:59:00,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:59:00,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297322786] [2020-12-23 07:59:00,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:59:00,979 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:59:00,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1238491548] [2020-12-23 07:59:00,979 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:59:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:59:01,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-23 07:59:01,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:59:01,402 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:59:01,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297322786] [2020-12-23 07:59:01,402 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:59:01,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238491548] [2020-12-23 07:59:01,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:59:01,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-12-23 07:59:01,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549407560] [2020-12-23 07:59:01,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-23 07:59:01,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:59:01,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-23 07:59:01,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-12-23 07:59:01,404 INFO L87 Difference]: Start difference. First operand 306 states and 344 transitions. Second operand 19 states. [2020-12-23 07:59:01,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:59:01,693 INFO L93 Difference]: Finished difference Result 341 states and 384 transitions. [2020-12-23 07:59:01,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-23 07:59:01,693 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 115 [2020-12-23 07:59:01,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:59:01,695 INFO L225 Difference]: With dead ends: 341 [2020-12-23 07:59:01,696 INFO L226 Difference]: Without dead ends: 329 [2020-12-23 07:59:01,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=335, Invalid=595, Unknown=0, NotChecked=0, Total=930 [2020-12-23 07:59:01,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-12-23 07:59:01,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 328. [2020-12-23 07:59:01,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-12-23 07:59:01,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 369 transitions. [2020-12-23 07:59:01,723 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 369 transitions. Word has length 115 [2020-12-23 07:59:01,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:59:01,723 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 369 transitions. [2020-12-23 07:59:01,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-23 07:59:01,723 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 369 transitions. [2020-12-23 07:59:01,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-23 07:59:01,725 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:59:01,725 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:59:01,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-23 07:59:01,928 INFO L429 AbstractCegarLoop]: === Iteration 36 === [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 07:59:01,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:59:01,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1860265996, now seen corresponding path program 14 times [2020-12-23 07:59:01,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:59:01,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098741790] [2020-12-23 07:59:01,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:59:01,946 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:59:01,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2137964304] [2020-12-23 07:59:01,946 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 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:59:02,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:59:02,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:59:02,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-23 07:59:02,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:59:02,435 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:59:02,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098741790] [2020-12-23 07:59:02,436 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:59:02,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137964304] [2020-12-23 07:59:02,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:59:02,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-12-23 07:59:02,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993262632] [2020-12-23 07:59:02,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-23 07:59:02,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:59:02,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-23 07:59:02,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-12-23 07:59:02,438 INFO L87 Difference]: Start difference. First operand 328 states and 369 transitions. Second operand 20 states. [2020-12-23 07:59:02,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:59:02,795 INFO L93 Difference]: Finished difference Result 363 states and 409 transitions. [2020-12-23 07:59:02,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-23 07:59:02,795 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 122 [2020-12-23 07:59:02,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:59:02,797 INFO L225 Difference]: With dead ends: 363 [2020-12-23 07:59:02,797 INFO L226 Difference]: Without dead ends: 351 [2020-12-23 07:59:02,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=381, Invalid=675, Unknown=0, NotChecked=0, Total=1056 [2020-12-23 07:59:02,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-12-23 07:59:02,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 350. [2020-12-23 07:59:02,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-12-23 07:59:02,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 394 transitions. [2020-12-23 07:59:02,827 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 394 transitions. Word has length 122 [2020-12-23 07:59:02,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:59:02,827 INFO L481 AbstractCegarLoop]: Abstraction has 350 states and 394 transitions. [2020-12-23 07:59:02,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-23 07:59:02,827 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 394 transitions. [2020-12-23 07:59:02,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-23 07:59:02,829 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:59:02,829 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:59:03,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-12-23 07:59:03,044 INFO L429 AbstractCegarLoop]: === Iteration 37 === [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 07:59:03,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:59:03,045 INFO L82 PathProgramCache]: Analyzing trace with hash 2125886217, now seen corresponding path program 15 times [2020-12-23 07:59:03,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:59:03,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598951691] [2020-12-23 07:59:03,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:59:03,052 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:59:03,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1011980046] [2020-12-23 07:59:03,053 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 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:59:03,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2020-12-23 07:59:03,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:59:03,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 07:59:03,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:59:03,715 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 0 proven. 689 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:59:03,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598951691] [2020-12-23 07:59:03,715 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:59:03,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011980046] [2020-12-23 07:59:03,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:59:03,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-12-23 07:59:03,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817872652] [2020-12-23 07:59:03,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-23 07:59:03,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:59:03,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-23 07:59:03,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-12-23 07:59:03,717 INFO L87 Difference]: Start difference. First operand 350 states and 394 transitions. Second operand 21 states. [2020-12-23 07:59:04,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:59:04,109 INFO L93 Difference]: Finished difference Result 385 states and 434 transitions. [2020-12-23 07:59:04,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-23 07:59:04,110 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 129 [2020-12-23 07:59:04,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:59:04,112 INFO L225 Difference]: With dead ends: 385 [2020-12-23 07:59:04,112 INFO L226 Difference]: Without dead ends: 373 [2020-12-23 07:59:04,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=430, Invalid=760, Unknown=0, NotChecked=0, Total=1190 [2020-12-23 07:59:04,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-12-23 07:59:04,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 372. [2020-12-23 07:59:04,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-12-23 07:59:04,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 419 transitions. [2020-12-23 07:59:04,144 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 419 transitions. Word has length 129 [2020-12-23 07:59:04,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:59:04,144 INFO L481 AbstractCegarLoop]: Abstraction has 372 states and 419 transitions. [2020-12-23 07:59:04,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-23 07:59:04,145 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 419 transitions. [2020-12-23 07:59:04,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-23 07:59:04,146 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:59:04,146 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:59:04,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-12-23 07:59:04,361 INFO L429 AbstractCegarLoop]: === Iteration 38 === [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 07:59:04,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:59:04,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1519092076, now seen corresponding path program 16 times [2020-12-23 07:59:04,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:59:04,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509842310] [2020-12-23 07:59:04,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:59:04,373 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:59:04,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [823462745] [2020-12-23 07:59:04,373 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 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:59:05,866 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 07:59:05,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:59:05,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-23 07:59:05,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:59:06,312 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 0 proven. 789 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:59:06,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509842310] [2020-12-23 07:59:06,313 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:59:06,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823462745] [2020-12-23 07:59:06,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:59:06,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-12-23 07:59:06,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983558609] [2020-12-23 07:59:06,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-23 07:59:06,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:59:06,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-23 07:59:06,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-12-23 07:59:06,318 INFO L87 Difference]: Start difference. First operand 372 states and 419 transitions. Second operand 22 states. [2020-12-23 07:59:06,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:59:06,694 INFO L93 Difference]: Finished difference Result 407 states and 459 transitions. [2020-12-23 07:59:06,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-12-23 07:59:06,694 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 136 [2020-12-23 07:59:06,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:59:06,697 INFO L225 Difference]: With dead ends: 407 [2020-12-23 07:59:06,697 INFO L226 Difference]: Without dead ends: 395 [2020-12-23 07:59:06,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=482, Invalid=850, Unknown=0, NotChecked=0, Total=1332 [2020-12-23 07:59:06,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-12-23 07:59:06,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 394. [2020-12-23 07:59:06,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-12-23 07:59:06,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 444 transitions. [2020-12-23 07:59:06,730 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 444 transitions. Word has length 136 [2020-12-23 07:59:06,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:59:06,730 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 444 transitions. [2020-12-23 07:59:06,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-23 07:59:06,730 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 444 transitions. [2020-12-23 07:59:06,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-23 07:59:06,732 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:59:06,732 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:59:06,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-12-23 07:59:06,941 INFO L429 AbstractCegarLoop]: === Iteration 39 === [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 07:59:06,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:59:06,942 INFO L82 PathProgramCache]: Analyzing trace with hash -241234519, now seen corresponding path program 17 times [2020-12-23 07:59:06,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:59:06,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917264053] [2020-12-23 07:59:06,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:59:06,950 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:59:06,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1462376372] [2020-12-23 07:59:06,950 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:59:14,217 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2020-12-23 07:59:14,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:59:14,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 41 conjunts are in the unsatisfiable core [2020-12-23 07:59:14,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:59:14,671 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 0 proven. 896 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:59:14,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917264053] [2020-12-23 07:59:14,672 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:59:14,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462376372] [2020-12-23 07:59:14,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:59:14,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-12-23 07:59:14,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978377398] [2020-12-23 07:59:14,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-23 07:59:14,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:59:14,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-23 07:59:14,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-12-23 07:59:14,674 INFO L87 Difference]: Start difference. First operand 394 states and 444 transitions. Second operand 23 states. [2020-12-23 07:59:15,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:59:15,103 INFO L93 Difference]: Finished difference Result 429 states and 484 transitions. [2020-12-23 07:59:15,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-23 07:59:15,104 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 143 [2020-12-23 07:59:15,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:59:15,106 INFO L225 Difference]: With dead ends: 429 [2020-12-23 07:59:15,106 INFO L226 Difference]: Without dead ends: 417 [2020-12-23 07:59:15,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=537, Invalid=945, Unknown=0, NotChecked=0, Total=1482 [2020-12-23 07:59:15,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-12-23 07:59:15,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 416. [2020-12-23 07:59:15,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-12-23 07:59:15,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 469 transitions. [2020-12-23 07:59:15,141 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 469 transitions. Word has length 143 [2020-12-23 07:59:15,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:59:15,142 INFO L481 AbstractCegarLoop]: Abstraction has 416 states and 469 transitions. [2020-12-23 07:59:15,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-23 07:59:15,142 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 469 transitions. [2020-12-23 07:59:15,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-12-23 07:59:15,143 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:59:15,143 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:59:15,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-12-23 07:59:15,352 INFO L429 AbstractCegarLoop]: === Iteration 40 === [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 07:59:15,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:59:15,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1268927796, now seen corresponding path program 18 times [2020-12-23 07:59:15,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:59:15,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072228850] [2020-12-23 07:59:15,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:59:15,364 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:59:15,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [933919350] [2020-12-23 07:59:15,364 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:59:15,959 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-12-23 07:59:15,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:59:15,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-23 07:59:15,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:59:16,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 288 proven. 43 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2020-12-23 07:59:16,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072228850] [2020-12-23 07:59:16,088 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:59:16,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933919350] [2020-12-23 07:59:16,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:59:16,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:59:16,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556978389] [2020-12-23 07:59:16,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:59:16,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:59:16,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:59:16,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:59:16,089 INFO L87 Difference]: Start difference. First operand 416 states and 469 transitions. Second operand 5 states. [2020-12-23 07:59:16,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:59:16,155 INFO L93 Difference]: Finished difference Result 531 states and 599 transitions. [2020-12-23 07:59:16,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:59:16,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-12-23 07:59:16,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:59:16,158 INFO L225 Difference]: With dead ends: 531 [2020-12-23 07:59:16,158 INFO L226 Difference]: Without dead ends: 395 [2020-12-23 07:59:16,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:59:16,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-12-23 07:59:16,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2020-12-23 07:59:16,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-12-23 07:59:16,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 445 transitions. [2020-12-23 07:59:16,197 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 445 transitions. Word has length 150 [2020-12-23 07:59:16,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:59:16,198 INFO L481 AbstractCegarLoop]: Abstraction has 395 states and 445 transitions. [2020-12-23 07:59:16,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:59:16,198 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 445 transitions. [2020-12-23 07:59:16,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-23 07:59:16,199 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:59:16,199 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:59:16,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-12-23 07:59:16,405 INFO L429 AbstractCegarLoop]: === Iteration 41 === [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 07:59:16,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:59:16,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1624647849, now seen corresponding path program 19 times [2020-12-23 07:59:16,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:59:16,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522498448] [2020-12-23 07:59:16,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:59:16,414 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:59:16,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [359947509] [2020-12-23 07:59:16,415 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:59:16,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:59:16,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 07:59:16,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:59:16,762 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 335 proven. 87 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2020-12-23 07:59:16,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522498448] [2020-12-23 07:59:16,763 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:59:16,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359947509] [2020-12-23 07:59:16,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:59:16,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:59:16,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035622706] [2020-12-23 07:59:16,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:59:16,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:59:16,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:59:16,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:59:16,765 INFO L87 Difference]: Start difference. First operand 395 states and 445 transitions. Second operand 9 states. [2020-12-23 07:59:16,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:59:16,896 INFO L93 Difference]: Finished difference Result 612 states and 692 transitions. [2020-12-23 07:59:16,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:59:16,897 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 151 [2020-12-23 07:59:16,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:59:16,899 INFO L225 Difference]: With dead ends: 612 [2020-12-23 07:59:16,899 INFO L226 Difference]: Without dead ends: 381 [2020-12-23 07:59:16,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:59:16,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-12-23 07:59:16,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2020-12-23 07:59:16,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-12-23 07:59:16,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 428 transitions. [2020-12-23 07:59:16,932 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 428 transitions. Word has length 151 [2020-12-23 07:59:16,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:59:16,932 INFO L481 AbstractCegarLoop]: Abstraction has 381 states and 428 transitions. [2020-12-23 07:59:16,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:59:16,932 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 428 transitions. [2020-12-23 07:59:16,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-23 07:59:16,933 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:59:16,933 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:59:17,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:59:17,147 INFO L429 AbstractCegarLoop]: === Iteration 42 === [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 07:59:17,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:59:17,148 INFO L82 PathProgramCache]: Analyzing trace with hash -187266160, now seen corresponding path program 20 times [2020-12-23 07:59:17,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:59:17,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192011179] [2020-12-23 07:59:17,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:59:17,157 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:59:17,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1691993266] [2020-12-23 07:59:17,158 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 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:59:17,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:59:17,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:59:17,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 07:59:17,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:59:17,486 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 354 proven. 146 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-12-23 07:59:17,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192011179] [2020-12-23 07:59:17,487 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:59:17,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691993266] [2020-12-23 07:59:17,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:59:17,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:59:17,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196978877] [2020-12-23 07:59:17,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:59:17,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:59:17,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:59:17,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:59:17,488 INFO L87 Difference]: Start difference. First operand 381 states and 428 transitions. Second operand 7 states. [2020-12-23 07:59:17,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:59:17,611 INFO L93 Difference]: Finished difference Result 584 states and 659 transitions. [2020-12-23 07:59:17,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:59:17,611 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-12-23 07:59:17,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:59:17,613 INFO L225 Difference]: With dead ends: 584 [2020-12-23 07:59:17,613 INFO L226 Difference]: Without dead ends: 367 [2020-12-23 07:59:17,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:59:17,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-12-23 07:59:17,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2020-12-23 07:59:17,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-12-23 07:59:17,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 411 transitions. [2020-12-23 07:59:17,646 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 411 transitions. Word has length 152 [2020-12-23 07:59:17,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:59:17,646 INFO L481 AbstractCegarLoop]: Abstraction has 367 states and 411 transitions. [2020-12-23 07:59:17,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:59:17,646 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 411 transitions. [2020-12-23 07:59:17,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-23 07:59:17,647 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:59:17,648 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:59:17,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:59:17,863 INFO L429 AbstractCegarLoop]: === Iteration 43 === [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 07:59:17,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:59:17,863 INFO L82 PathProgramCache]: Analyzing trace with hash -773202029, now seen corresponding path program 21 times [2020-12-23 07:59:17,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:59:17,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176059528] [2020-12-23 07:59:17,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:59:17,872 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:59:17,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [306548677] [2020-12-23 07:59:17,873 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 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:59:18,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2020-12-23 07:59:18,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:59:18,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-23 07:59:18,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:59:18,893 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 345 proven. 220 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-12-23 07:59:18,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176059528] [2020-12-23 07:59:18,894 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:59:18,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306548677] [2020-12-23 07:59:18,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:59:18,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:59:18,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374406425] [2020-12-23 07:59:18,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:59:18,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:59:18,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:59:18,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:59:18,895 INFO L87 Difference]: Start difference. First operand 367 states and 411 transitions. Second operand 8 states. [2020-12-23 07:59:19,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:59:19,063 INFO L93 Difference]: Finished difference Result 556 states and 626 transitions. [2020-12-23 07:59:19,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:59:19,063 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2020-12-23 07:59:19,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:59:19,065 INFO L225 Difference]: With dead ends: 556 [2020-12-23 07:59:19,065 INFO L226 Difference]: Without dead ends: 353 [2020-12-23 07:59:19,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:59:19,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-12-23 07:59:19,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2020-12-23 07:59:19,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-12-23 07:59:19,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 394 transitions. [2020-12-23 07:59:19,094 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 394 transitions. Word has length 153 [2020-12-23 07:59:19,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:59:19,094 INFO L481 AbstractCegarLoop]: Abstraction has 353 states and 394 transitions. [2020-12-23 07:59:19,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:59:19,094 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 394 transitions. [2020-12-23 07:59:19,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-23 07:59:19,096 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:59:19,096 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:59:19,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2020-12-23 07:59:19,311 INFO L429 AbstractCegarLoop]: === Iteration 44 === [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 07:59:19,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:59:19,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1624092076, now seen corresponding path program 22 times [2020-12-23 07:59:19,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:59:19,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504827691] [2020-12-23 07:59:19,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:59:19,321 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:59:19,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1764083857] [2020-12-23 07:59:19,322 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 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true