/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:45:31,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:45:31,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:45:31,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:45:31,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:45:31,543 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:45:31,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:45:31,547 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:45:31,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:45:31,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:45:31,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:45:31,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:45:31,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:45:31,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:45:31,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:45:31,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:45:31,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:45:31,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:45:31,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:45:31,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:45:31,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:45:31,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:45:31,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:45:31,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:45:31,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:45:31,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:45:31,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:45:31,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:45:31,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:45:31,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:45:31,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:45:31,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:45:31,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:45:31,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:45:31,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:45:31,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:45:31,623 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 17:45:31,666 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:45:31,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:45:31,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:45:31,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:45:31,670 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:45:31,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:45:31,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:45:31,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:45:31,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:45:31,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:45:31,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:45:31,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:45:31,673 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:45:31,673 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:45:31,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:45:31,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:45:31,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:45:31,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:45:31,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:45:31,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:45:31,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:45:31,674 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:45:31,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:45:31,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:45:31,675 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:45:31,675 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:45:32,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:45:32,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:45:32,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:45:32,072 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:45:32,073 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:45:32,074 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound100.c [2021-01-06 17:45:32,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ba0232469/938bbe9bb1544940bd5dc2aa959c1d3d/FLAG51b7f8548 [2021-01-06 17:45:32,748 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:45:32,749 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound100.c [2021-01-06 17:45:32,761 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ba0232469/938bbe9bb1544940bd5dc2aa959c1d3d/FLAG51b7f8548 [2021-01-06 17:45:33,070 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ba0232469/938bbe9bb1544940bd5dc2aa959c1d3d [2021-01-06 17:45:33,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:45:33,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:45:33,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:45:33,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:45:33,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:45:33,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:45:33" (1/1) ... [2021-01-06 17:45:33,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d48d15c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:45:33, skipping insertion in model container [2021-01-06 17:45:33,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:45:33" (1/1) ... [2021-01-06 17:45:33,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:45:33,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:45:33,282 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound100.c[538,551] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2021-01-06 17:45:33,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:45:33,314 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:45:33,328 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound100.c[538,551] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2021-01-06 17:45:33,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:45:33,354 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:45:33,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:45:33 WrapperNode [2021-01-06 17:45:33,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:45:33,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:45:33,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:45:33,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:45:33,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:45:33" (1/1) ... [2021-01-06 17:45:33,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:45:33" (1/1) ... [2021-01-06 17:45:33,396 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:45:33,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:45:33,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:45:33,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:45:33,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:45:33" (1/1) ... [2021-01-06 17:45:33,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:45:33" (1/1) ... [2021-01-06 17:45:33,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:45:33" (1/1) ... [2021-01-06 17:45:33,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:45:33" (1/1) ... [2021-01-06 17:45:33,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:45:33" (1/1) ... [2021-01-06 17:45:33,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:45:33" (1/1) ... [2021-01-06 17:45:33,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:45:33" (1/1) ... [2021-01-06 17:45:33,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:45:33,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:45:33,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:45:33,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:45:33,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:45:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:45:33,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:45:33,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:45:33,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:45:33,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:45:33,993 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:45:33,994 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-01-06 17:45:33,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:45:33 BoogieIcfgContainer [2021-01-06 17:45:33,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:45:34,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:45:34,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:45:34,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:45:34,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:45:33" (1/3) ... [2021-01-06 17:45:34,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b142f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:45:34, skipping insertion in model container [2021-01-06 17:45:34,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:45:33" (2/3) ... [2021-01-06 17:45:34,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b142f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:45:34, skipping insertion in model container [2021-01-06 17:45:34,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:45:33" (3/3) ... [2021-01-06 17:45:34,017 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_unwindbound100.c [2021-01-06 17:45:34,025 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:45:34,029 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2021-01-06 17:45:34,048 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-01-06 17:45:34,074 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:45:34,074 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:45:34,075 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:45:34,075 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:45:34,075 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:45:34,075 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:45:34,075 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:45:34,076 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:45:34,092 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2021-01-06 17:45:34,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 17:45:34,098 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:45:34,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:45:34,099 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:45:34,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:45:34,105 INFO L82 PathProgramCache]: Analyzing trace with hash 119446382, now seen corresponding path program 1 times [2021-01-06 17:45:34,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:45:34,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118850204] [2021-01-06 17:45:34,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:45:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:45:34,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:45:34,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118850204] [2021-01-06 17:45:34,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:45:34,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:45:34,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553588340] [2021-01-06 17:45:34,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:45:34,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:45:34,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:45:34,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:45:34,297 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2021-01-06 17:45:34,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:45:34,320 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2021-01-06 17:45:34,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:45:34,322 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-01-06 17:45:34,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:45:34,333 INFO L225 Difference]: With dead ends: 79 [2021-01-06 17:45:34,333 INFO L226 Difference]: Without dead ends: 37 [2021-01-06 17:45:34,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:45:34,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-01-06 17:45:34,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-01-06 17:45:34,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-01-06 17:45:34,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-01-06 17:45:34,378 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2021-01-06 17:45:34,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:45:34,379 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-01-06 17:45:34,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:45:34,379 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-01-06 17:45:34,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 17:45:34,380 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:45:34,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:45:34,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:45:34,381 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:45:34,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:45:34,382 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2021-01-06 17:45:34,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:45:34,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262085614] [2021-01-06 17:45:34,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:45:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:45:34,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:45:34,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262085614] [2021-01-06 17:45:34,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:45:34,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:45:34,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639265660] [2021-01-06 17:45:34,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:45:34,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:45:34,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:45:34,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:45:34,481 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2021-01-06 17:45:34,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:45:34,613 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2021-01-06 17:45:34,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:45:34,614 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-01-06 17:45:34,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:45:34,616 INFO L225 Difference]: With dead ends: 61 [2021-01-06 17:45:34,616 INFO L226 Difference]: Without dead ends: 59 [2021-01-06 17:45:34,617 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 [2021-01-06 17:45:34,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-01-06 17:45:34,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2021-01-06 17:45:34,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-01-06 17:45:34,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-01-06 17:45:34,626 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2021-01-06 17:45:34,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:45:34,626 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-01-06 17:45:34,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:45:34,626 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-01-06 17:45:34,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:45:34,627 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:45:34,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:45:34,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 17:45:34,628 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:45:34,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:45:34,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1986071569, now seen corresponding path program 1 times [2021-01-06 17:45:34,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:45:34,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401093613] [2021-01-06 17:45:34,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:45:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:45:34,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:45:34,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401093613] [2021-01-06 17:45:34,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:45:34,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:45:34,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043034295] [2021-01-06 17:45:34,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:45:34,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:45:34,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:45:34,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:45:34,706 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2021-01-06 17:45:34,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:45:34,761 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2021-01-06 17:45:34,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:45:34,763 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-01-06 17:45:34,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:45:34,765 INFO L225 Difference]: With dead ends: 56 [2021-01-06 17:45:34,765 INFO L226 Difference]: Without dead ends: 37 [2021-01-06 17:45:34,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:45:34,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-01-06 17:45:34,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-01-06 17:45:34,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-01-06 17:45:34,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-01-06 17:45:34,784 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 10 [2021-01-06 17:45:34,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:45:34,785 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-01-06 17:45:34,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:45:34,785 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-01-06 17:45:34,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:45:34,786 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:45:34,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:45:34,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 17:45:34,786 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:45:34,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:45:34,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2021-01-06 17:45:34,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:45:34,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664819190] [2021-01-06 17:45:34,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:45:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:45:34,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:45:34,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664819190] [2021-01-06 17:45:34,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:45:34,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:45:34,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498532008] [2021-01-06 17:45:34,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:45:34,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:45:34,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:45:34,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:45:34,886 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2021-01-06 17:45:35,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:45:35,015 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2021-01-06 17:45:35,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:45:35,016 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-01-06 17:45:35,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:45:35,017 INFO L225 Difference]: With dead ends: 56 [2021-01-06 17:45:35,017 INFO L226 Difference]: Without dead ends: 54 [2021-01-06 17:45:35,018 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 [2021-01-06 17:45:35,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-01-06 17:45:35,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2021-01-06 17:45:35,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-01-06 17:45:35,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-01-06 17:45:35,031 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 10 [2021-01-06 17:45:35,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:45:35,032 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-01-06 17:45:35,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:45:35,032 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-01-06 17:45:35,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 17:45:35,033 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:45:35,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:45:35,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 17:45:35,034 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:45:35,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:45:35,036 INFO L82 PathProgramCache]: Analyzing trace with hash -941046702, now seen corresponding path program 1 times [2021-01-06 17:45:35,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:45:35,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675005622] [2021-01-06 17:45:35,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:45:35,063 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:45:35,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [75521175] [2021-01-06 17:45:35,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:45:35,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:45:35,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:45:35,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:45:35,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675005622] [2021-01-06 17:45:35,274 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:45:35,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75521175] [2021-01-06 17:45:35,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:45:35,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:45:35,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392356248] [2021-01-06 17:45:35,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:45:35,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:45:35,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:45:35,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:45:35,277 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2021-01-06 17:45:35,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:45:35,470 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2021-01-06 17:45:35,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:45:35,471 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2021-01-06 17:45:35,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:45:35,472 INFO L225 Difference]: With dead ends: 81 [2021-01-06 17:45:35,472 INFO L226 Difference]: Without dead ends: 58 [2021-01-06 17:45:35,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:45:35,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-01-06 17:45:35,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2021-01-06 17:45:35,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-01-06 17:45:35,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2021-01-06 17:45:35,482 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 12 [2021-01-06 17:45:35,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:45:35,483 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2021-01-06 17:45:35,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:45:35,483 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2021-01-06 17:45:35,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 17:45:35,484 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:45:35,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:45:35,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:35,701 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:45:35,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:45:35,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1803611644, now seen corresponding path program 1 times [2021-01-06 17:45:35,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:45:35,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931315868] [2021-01-06 17:45:35,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:45:35,717 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:45:35,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [89147138] [2021-01-06 17:45:35,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:45:35,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:45:35,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:45:35,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:45:35,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931315868] [2021-01-06 17:45:35,979 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:45:35,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89147138] [2021-01-06 17:45:35,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:45:35,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 17:45:35,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200156397] [2021-01-06 17:45:35,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:45:35,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:45:35,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:45:35,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:45:35,981 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 7 states. [2021-01-06 17:45:36,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:45:36,300 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2021-01-06 17:45:36,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:45:36,301 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2021-01-06 17:45:36,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:45:36,301 INFO L225 Difference]: With dead ends: 53 [2021-01-06 17:45:36,302 INFO L226 Difference]: Without dead ends: 41 [2021-01-06 17:45:36,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:45:36,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-01-06 17:45:36,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-01-06 17:45:36,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-01-06 17:45:36,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2021-01-06 17:45:36,310 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 16 [2021-01-06 17:45:36,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:45:36,310 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2021-01-06 17:45:36,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:45:36,310 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2021-01-06 17:45:36,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:45:36,311 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:45:36,311 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:45:36,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:36,526 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:45:36,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:45:36,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1571159167, now seen corresponding path program 1 times [2021-01-06 17:45:36,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:45:36,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891964905] [2021-01-06 17:45:36,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:45:36,541 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:45:36,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1443024499] [2021-01-06 17:45:36,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:45:36,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:45:36,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:45:36,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:45:36,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891964905] [2021-01-06 17:45:36,639 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:45:36,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443024499] [2021-01-06 17:45:36,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:45:36,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-01-06 17:45:36,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117079636] [2021-01-06 17:45:36,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:45:36,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:45:36,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:45:36,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:45:36,641 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 5 states. [2021-01-06 17:45:36,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:45:36,670 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2021-01-06 17:45:36,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:45:36,671 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2021-01-06 17:45:36,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:45:36,672 INFO L225 Difference]: With dead ends: 62 [2021-01-06 17:45:36,672 INFO L226 Difference]: Without dead ends: 43 [2021-01-06 17:45:36,672 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 [2021-01-06 17:45:36,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-01-06 17:45:36,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-01-06 17:45:36,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-01-06 17:45:36,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2021-01-06 17:45:36,679 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 18 [2021-01-06 17:45:36,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:45:36,680 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2021-01-06 17:45:36,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:45:36,680 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2021-01-06 17:45:36,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 17:45:36,681 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:45:36,681 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:45:36,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:36,897 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:45:36,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:45:36,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1642186908, now seen corresponding path program 1 times [2021-01-06 17:45:36,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:45:36,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366146670] [2021-01-06 17:45:36,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:45:36,912 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:45:36,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062027174] [2021-01-06 17:45:36,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:45:37,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-06 17:45:37,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:45:37,160 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:45:37,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366146670] [2021-01-06 17:45:37,161 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:45:37,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062027174] [2021-01-06 17:45:37,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:45:37,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:45:37,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963227487] [2021-01-06 17:45:37,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:45:37,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:45:37,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:45:37,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:45:37,163 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 9 states. [2021-01-06 17:45:37,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:45:37,561 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2021-01-06 17:45:37,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:45:37,562 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2021-01-06 17:45:37,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:45:37,563 INFO L225 Difference]: With dead ends: 106 [2021-01-06 17:45:37,563 INFO L226 Difference]: Without dead ends: 83 [2021-01-06 17:45:37,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:45:37,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-01-06 17:45:37,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 64. [2021-01-06 17:45:37,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-01-06 17:45:37,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2021-01-06 17:45:37,575 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 20 [2021-01-06 17:45:37,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:45:37,575 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2021-01-06 17:45:37,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:45:37,575 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2021-01-06 17:45:37,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-06 17:45:37,576 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:45:37,576 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:45:37,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:37,790 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:45:37,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:45:37,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1958905870, now seen corresponding path program 1 times [2021-01-06 17:45:37,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:45:37,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927263512] [2021-01-06 17:45:37,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:45:37,806 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:45:37,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1228584847] [2021-01-06 17:45:37,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:45:37,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:45:37,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:45:38,087 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:45:38,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927263512] [2021-01-06 17:45:38,088 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:45:38,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228584847] [2021-01-06 17:45:38,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:45:38,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:45:38,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119192689] [2021-01-06 17:45:38,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:45:38,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:45:38,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:45:38,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:45:38,091 INFO L87 Difference]: Start difference. First operand 64 states and 74 transitions. Second operand 8 states. [2021-01-06 17:45:38,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:45:38,712 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2021-01-06 17:45:38,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:45:38,713 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2021-01-06 17:45:38,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:45:38,714 INFO L225 Difference]: With dead ends: 74 [2021-01-06 17:45:38,714 INFO L226 Difference]: Without dead ends: 62 [2021-01-06 17:45:38,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2021-01-06 17:45:38,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-01-06 17:45:38,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2021-01-06 17:45:38,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-01-06 17:45:38,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2021-01-06 17:45:38,724 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 24 [2021-01-06 17:45:38,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:45:38,724 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2021-01-06 17:45:38,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:45:38,724 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2021-01-06 17:45:38,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-06 17:45:38,725 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:45:38,725 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:45:38,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:38,940 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:45:38,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:45:38,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1637703955, now seen corresponding path program 2 times [2021-01-06 17:45:38,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:45:38,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944652005] [2021-01-06 17:45:38,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:45:38,953 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:45:38,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [304389266] [2021-01-06 17:45:38,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:39,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-06 17:45:39,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:45:39,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 17:45:39,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:45:39,045 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-01-06 17:45:39,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944652005] [2021-01-06 17:45:39,046 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:45:39,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304389266] [2021-01-06 17:45:39,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:45:39,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:45:39,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233456279] [2021-01-06 17:45:39,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:45:39,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:45:39,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:45:39,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:45:39,048 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand 5 states. [2021-01-06 17:45:39,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:45:39,081 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2021-01-06 17:45:39,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:45:39,082 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2021-01-06 17:45:39,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:45:39,083 INFO L225 Difference]: With dead ends: 87 [2021-01-06 17:45:39,083 INFO L226 Difference]: Without dead ends: 68 [2021-01-06 17:45:39,083 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 [2021-01-06 17:45:39,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-01-06 17:45:39,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2021-01-06 17:45:39,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-01-06 17:45:39,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2021-01-06 17:45:39,091 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 26 [2021-01-06 17:45:39,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:45:39,091 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2021-01-06 17:45:39,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:45:39,092 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2021-01-06 17:45:39,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-06 17:45:39,093 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:45:39,093 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:45:39,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:39,307 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:45:39,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:45:39,307 INFO L82 PathProgramCache]: Analyzing trace with hash 2018616451, now seen corresponding path program 1 times [2021-01-06 17:45:39,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:45:39,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330317988] [2021-01-06 17:45:39,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:45:39,320 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:45:39,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1045575565] [2021-01-06 17:45:39,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:39,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:45:39,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:45:39,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:45:39,436 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:45:39,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330317988] [2021-01-06 17:45:39,436 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:45:39,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045575565] [2021-01-06 17:45:39,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:45:39,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:45:39,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799634928] [2021-01-06 17:45:39,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:45:39,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:45:39,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:45:39,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:45:39,439 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 6 states. [2021-01-06 17:45:39,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:45:39,463 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2021-01-06 17:45:39,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:45:39,463 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2021-01-06 17:45:39,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:45:39,465 INFO L225 Difference]: With dead ends: 65 [2021-01-06 17:45:39,465 INFO L226 Difference]: Without dead ends: 59 [2021-01-06 17:45:39,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:45:39,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-01-06 17:45:39,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2021-01-06 17:45:39,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-01-06 17:45:39,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2021-01-06 17:45:39,483 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 27 [2021-01-06 17:45:39,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:45:39,484 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2021-01-06 17:45:39,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:45:39,484 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2021-01-06 17:45:39,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-06 17:45:39,485 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:45:39,485 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:45:39,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:39,691 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:45:39,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:45:39,692 INFO L82 PathProgramCache]: Analyzing trace with hash -770811653, now seen corresponding path program 1 times [2021-01-06 17:45:39,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:45:39,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065742520] [2021-01-06 17:45:39,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:45:39,702 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:45:39,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [931992783] [2021-01-06 17:45:39,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:45:39,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:45:39,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:45:39,805 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:45:39,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065742520] [2021-01-06 17:45:39,806 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:45:39,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931992783] [2021-01-06 17:45:39,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:45:39,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:45:39,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606786735] [2021-01-06 17:45:39,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:45:39,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:45:39,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:45:39,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:45:39,808 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 6 states. [2021-01-06 17:45:39,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:45:39,845 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2021-01-06 17:45:39,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:45:39,846 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2021-01-06 17:45:39,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:45:39,846 INFO L225 Difference]: With dead ends: 70 [2021-01-06 17:45:39,846 INFO L226 Difference]: Without dead ends: 60 [2021-01-06 17:45:39,847 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 [2021-01-06 17:45:39,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-01-06 17:45:39,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-01-06 17:45:39,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-01-06 17:45:39,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2021-01-06 17:45:39,854 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 27 [2021-01-06 17:45:39,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:45:39,854 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2021-01-06 17:45:39,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:45:39,854 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2021-01-06 17:45:39,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-06 17:45:39,855 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:45:39,855 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-01-06 17:45:40,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-06 17:45:40,070 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:45:40,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:45:40,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1711245194, now seen corresponding path program 2 times [2021-01-06 17:45:40,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:45:40,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327281674] [2021-01-06 17:45:40,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:45:40,092 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:45:40,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1564536943] [2021-01-06 17:45:40,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:40,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:45:40,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:45:40,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 42 conjunts are in the unsatisfiable core [2021-01-06 17:45:40,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:45:40,574 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:45:40,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327281674] [2021-01-06 17:45:40,574 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:45:40,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564536943] [2021-01-06 17:45:40,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:45:40,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 17:45:40,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589076649] [2021-01-06 17:45:40,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:45:40,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:45:40,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:45:40,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:45:40,577 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 12 states. [2021-01-06 17:45:43,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:45:43,878 INFO L93 Difference]: Finished difference Result 119 states and 131 transitions. [2021-01-06 17:45:43,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-06 17:45:43,878 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2021-01-06 17:45:43,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:45:43,879 INFO L225 Difference]: With dead ends: 119 [2021-01-06 17:45:43,879 INFO L226 Difference]: Without dead ends: 107 [2021-01-06 17:45:43,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2021-01-06 17:45:43,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-01-06 17:45:43,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 79. [2021-01-06 17:45:43,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-01-06 17:45:43,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 90 transitions. [2021-01-06 17:45:43,900 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 90 transitions. Word has length 28 [2021-01-06 17:45:43,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:45:43,901 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 90 transitions. [2021-01-06 17:45:43,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:45:43,901 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 90 transitions. [2021-01-06 17:45:43,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 17:45:43,902 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:45:43,902 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:45:44,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:44,103 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:45:44,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:45:44,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1339843922, now seen corresponding path program 1 times [2021-01-06 17:45:44,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:45:44,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286215081] [2021-01-06 17:45:44,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:45:44,123 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:45:44,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1860575888] [2021-01-06 17:45:44,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:45:44,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 33 conjunts are in the unsatisfiable core [2021-01-06 17:45:44,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:45:44,529 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:45:44,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286215081] [2021-01-06 17:45:44,530 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:45:44,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860575888] [2021-01-06 17:45:44,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:45:44,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:45:44,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103731024] [2021-01-06 17:45:44,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:45:44,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:45:44,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:45:44,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:45:44,534 INFO L87 Difference]: Start difference. First operand 79 states and 90 transitions. Second operand 10 states. [2021-01-06 17:45:45,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:45:45,220 INFO L93 Difference]: Finished difference Result 101 states and 115 transitions. [2021-01-06 17:45:45,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:45:45,221 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2021-01-06 17:45:45,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:45:45,222 INFO L225 Difference]: With dead ends: 101 [2021-01-06 17:45:45,222 INFO L226 Difference]: Without dead ends: 99 [2021-01-06 17:45:45,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-01-06 17:45:45,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-01-06 17:45:45,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 86. [2021-01-06 17:45:45,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-01-06 17:45:45,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions. [2021-01-06 17:45:45,237 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 31 [2021-01-06 17:45:45,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:45:45,238 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions. [2021-01-06 17:45:45,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:45:45,238 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions. [2021-01-06 17:45:45,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 17:45:45,241 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:45:45,241 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:45:45,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:45,457 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:45:45,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:45:45,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1414538084, now seen corresponding path program 1 times [2021-01-06 17:45:45,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:45:45,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551750281] [2021-01-06 17:45:45,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:45:45,473 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:45:45,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [609004416] [2021-01-06 17:45:45,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:45:45,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 17:45:45,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:45:45,613 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:45:45,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551750281] [2021-01-06 17:45:45,614 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:45:45,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609004416] [2021-01-06 17:45:45,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:45:45,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:45:45,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299183428] [2021-01-06 17:45:45,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:45:45,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:45:45,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:45:45,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:45:45,620 INFO L87 Difference]: Start difference. First operand 86 states and 101 transitions. Second operand 7 states. [2021-01-06 17:45:45,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:45:45,660 INFO L93 Difference]: Finished difference Result 97 states and 112 transitions. [2021-01-06 17:45:45,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:45:45,661 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2021-01-06 17:45:45,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:45:45,662 INFO L225 Difference]: With dead ends: 97 [2021-01-06 17:45:45,663 INFO L226 Difference]: Without dead ends: 89 [2021-01-06 17:45:45,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:45:45,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-01-06 17:45:45,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2021-01-06 17:45:45,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-01-06 17:45:45,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2021-01-06 17:45:45,677 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 32 [2021-01-06 17:45:45,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:45:45,678 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2021-01-06 17:45:45,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:45:45,678 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2021-01-06 17:45:45,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 17:45:45,682 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:45:45,682 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:45:45,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-06 17:45:45,896 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:45:45,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:45:45,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1150939168, now seen corresponding path program 2 times [2021-01-06 17:45:45,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:45:45,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523757914] [2021-01-06 17:45:45,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:45:45,916 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:45:45,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1630763502] [2021-01-06 17:45:45,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:45,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-06 17:45:45,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:45:45,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 17:45:45,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:45:46,087 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-01-06 17:45:46,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523757914] [2021-01-06 17:45:46,089 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:45:46,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630763502] [2021-01-06 17:45:46,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:45:46,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 17:45:46,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106152984] [2021-01-06 17:45:46,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:45:46,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:45:46,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:45:46,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:45:46,092 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand 7 states. [2021-01-06 17:45:46,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:45:46,286 INFO L93 Difference]: Finished difference Result 113 states and 131 transitions. [2021-01-06 17:45:46,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:45:46,286 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2021-01-06 17:45:46,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:45:46,287 INFO L225 Difference]: With dead ends: 113 [2021-01-06 17:45:46,287 INFO L226 Difference]: Without dead ends: 109 [2021-01-06 17:45:46,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:45:46,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-01-06 17:45:46,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2021-01-06 17:45:46,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2021-01-06 17:45:46,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 121 transitions. [2021-01-06 17:45:46,301 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 121 transitions. Word has length 32 [2021-01-06 17:45:46,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:45:46,301 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 121 transitions. [2021-01-06 17:45:46,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:45:46,302 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 121 transitions. [2021-01-06 17:45:46,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 17:45:46,303 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:45:46,304 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:45:46,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-06 17:45:46,518 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:45:46,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:45:46,519 INFO L82 PathProgramCache]: Analyzing trace with hash -900022411, now seen corresponding path program 1 times [2021-01-06 17:45:46,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:45:46,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832896565] [2021-01-06 17:45:46,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:45:46,533 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:45:46,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1528996957] [2021-01-06 17:45:46,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:45:46,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-06 17:45:46,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:45:46,846 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:45:46,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832896565] [2021-01-06 17:45:46,847 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:45:46,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528996957] [2021-01-06 17:45:46,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:45:46,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:45:46,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947793129] [2021-01-06 17:45:46,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:45:46,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:45:46,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:45:46,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:45:46,849 INFO L87 Difference]: Start difference. First operand 103 states and 121 transitions. Second operand 9 states. [2021-01-06 17:45:47,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:45:47,307 INFO L93 Difference]: Finished difference Result 132 states and 154 transitions. [2021-01-06 17:45:47,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:45:47,308 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2021-01-06 17:45:47,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:45:47,309 INFO L225 Difference]: With dead ends: 132 [2021-01-06 17:45:47,309 INFO L226 Difference]: Without dead ends: 104 [2021-01-06 17:45:47,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2021-01-06 17:45:47,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-01-06 17:45:47,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2021-01-06 17:45:47,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2021-01-06 17:45:47,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 116 transitions. [2021-01-06 17:45:47,319 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 116 transitions. Word has length 33 [2021-01-06 17:45:47,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:45:47,320 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 116 transitions. [2021-01-06 17:45:47,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:45:47,320 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 116 transitions. [2021-01-06 17:45:47,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-06 17:45:47,320 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:45:47,321 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:45:47,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-06 17:45:47,536 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:45:47,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:45:47,537 INFO L82 PathProgramCache]: Analyzing trace with hash 918142130, now seen corresponding path program 1 times [2021-01-06 17:45:47,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:45:47,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419427099] [2021-01-06 17:45:47,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:45:47,555 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:45:47,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53836992] [2021-01-06 17:45:47,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:45:47,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-06 17:45:47,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:45:47,844 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:45:47,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419427099] [2021-01-06 17:45:47,845 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:45:47,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53836992] [2021-01-06 17:45:47,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:45:47,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:45:47,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73580819] [2021-01-06 17:45:47,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:45:47,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:45:47,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:45:47,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:45:47,847 INFO L87 Difference]: Start difference. First operand 102 states and 116 transitions. Second operand 10 states. [2021-01-06 17:45:48,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:45:48,784 INFO L93 Difference]: Finished difference Result 154 states and 166 transitions. [2021-01-06 17:45:48,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 17:45:48,785 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2021-01-06 17:45:48,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:45:48,786 INFO L225 Difference]: With dead ends: 154 [2021-01-06 17:45:48,786 INFO L226 Difference]: Without dead ends: 137 [2021-01-06 17:45:48,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2021-01-06 17:45:48,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-01-06 17:45:48,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 93. [2021-01-06 17:45:48,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-01-06 17:45:48,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 110 transitions. [2021-01-06 17:45:48,797 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 110 transitions. Word has length 36 [2021-01-06 17:45:48,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:45:48,798 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 110 transitions. [2021-01-06 17:45:48,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:45:48,798 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 110 transitions. [2021-01-06 17:45:48,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-06 17:45:48,798 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:45:48,798 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2021-01-06 17:45:49,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:49,014 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:45:49,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:45:49,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1625393032, now seen corresponding path program 3 times [2021-01-06 17:45:49,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:45:49,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737276762] [2021-01-06 17:45:49,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:45:49,024 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:45:49,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [652245940] [2021-01-06 17:45:49,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:49,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:45:49,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:45:49,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-06 17:45:49,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:45:51,403 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-01-06 17:45:51,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737276762] [2021-01-06 17:45:51,403 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:45:51,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652245940] [2021-01-06 17:45:51,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:45:51,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:45:51,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351341499] [2021-01-06 17:45:51,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:45:51,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:45:51,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:45:51,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=30, Unknown=1, NotChecked=0, Total=42 [2021-01-06 17:45:51,407 INFO L87 Difference]: Start difference. First operand 93 states and 110 transitions. Second operand 7 states. [2021-01-06 17:46:53,631 WARN L197 SmtUtils]: Spent 22.21 s on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2021-01-06 17:47:03,760 WARN L197 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 18 [2021-01-06 17:47:52,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:47:52,611 INFO L93 Difference]: Finished difference Result 154 states and 171 transitions. [2021-01-06 17:47:52,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 17:47:52,612 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2021-01-06 17:47:52,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:47:52,614 INFO L225 Difference]: With dead ends: 154 [2021-01-06 17:47:52,614 INFO L226 Difference]: Without dead ends: 144 [2021-01-06 17:47:52,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 56.0s TimeCoverageRelationStatistics Valid=71, Invalid=156, Unknown=13, NotChecked=0, Total=240 [2021-01-06 17:47:52,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-01-06 17:47:52,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 108. [2021-01-06 17:47:52,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2021-01-06 17:47:52,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 130 transitions. [2021-01-06 17:47:52,628 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 130 transitions. Word has length 36 [2021-01-06 17:47:52,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:47:52,628 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 130 transitions. [2021-01-06 17:47:52,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:47:52,628 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 130 transitions. [2021-01-06 17:47:52,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 17:47:52,629 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:47:52,629 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:47:52,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:47:52,830 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:47:52,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:47:52,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1658895220, now seen corresponding path program 1 times [2021-01-06 17:47:52,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:47:52,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33992940] [2021-01-06 17:47:52,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:47:52,839 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:47:52,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [450546436] [2021-01-06 17:47:52,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:47:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:47:52,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 17:47:52,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:47:52,982 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:47:52,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33992940] [2021-01-06 17:47:52,983 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:47:52,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450546436] [2021-01-06 17:47:52,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:47:52,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:47:52,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110868328] [2021-01-06 17:47:52,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:47:52,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:47:52,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:47:52,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:47:52,986 INFO L87 Difference]: Start difference. First operand 108 states and 130 transitions. Second operand 7 states. [2021-01-06 17:47:53,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:47:53,052 INFO L93 Difference]: Finished difference Result 118 states and 140 transitions. [2021-01-06 17:47:53,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:47:53,053 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2021-01-06 17:47:53,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:47:53,054 INFO L225 Difference]: With dead ends: 118 [2021-01-06 17:47:53,054 INFO L226 Difference]: Without dead ends: 110 [2021-01-06 17:47:53,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:47:53,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-01-06 17:47:53,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-01-06 17:47:53,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2021-01-06 17:47:53,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 132 transitions. [2021-01-06 17:47:53,067 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 132 transitions. Word has length 37 [2021-01-06 17:47:53,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:47:53,067 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 132 transitions. [2021-01-06 17:47:53,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:47:53,068 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 132 transitions. [2021-01-06 17:47:53,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-01-06 17:47:53,068 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:47:53,068 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:47:53,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:47:53,282 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:47:53,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:47:53,283 INFO L82 PathProgramCache]: Analyzing trace with hash 406136064, now seen corresponding path program 2 times [2021-01-06 17:47:53,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:47:53,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916586880] [2021-01-06 17:47:53,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:47:53,292 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:47:53,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416747616] [2021-01-06 17:47:53,292 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 [2021-01-06 17:47:53,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:47:53,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:47:53,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 49 conjunts are in the unsatisfiable core [2021-01-06 17:47:53,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:47:53,947 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:47:53,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916586880] [2021-01-06 17:47:53,948 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:47:53,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416747616] [2021-01-06 17:47:53,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:47:53,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-01-06 17:47:53,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190388285] [2021-01-06 17:47:53,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 17:47:53,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:47:53,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 17:47:53,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:47:53,950 INFO L87 Difference]: Start difference. First operand 110 states and 132 transitions. Second operand 13 states. [2021-01-06 17:47:54,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:47:54,967 INFO L93 Difference]: Finished difference Result 162 states and 197 transitions. [2021-01-06 17:47:54,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 17:47:54,968 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2021-01-06 17:47:54,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:47:54,969 INFO L225 Difference]: With dead ends: 162 [2021-01-06 17:47:54,969 INFO L226 Difference]: Without dead ends: 122 [2021-01-06 17:47:54,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2021-01-06 17:47:54,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-01-06 17:47:54,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 111. [2021-01-06 17:47:54,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2021-01-06 17:47:54,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 134 transitions. [2021-01-06 17:47:54,982 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 134 transitions. Word has length 39 [2021-01-06 17:47:54,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:47:54,983 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 134 transitions. [2021-01-06 17:47:54,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 17:47:54,983 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 134 transitions. [2021-01-06 17:47:54,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-01-06 17:47:54,983 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:47:54,984 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:47:55,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-01-06 17:47:55,197 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:47:55,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:47:55,198 INFO L82 PathProgramCache]: Analyzing trace with hash -294710610, now seen corresponding path program 2 times [2021-01-06 17:47:55,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:47:55,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143218128] [2021-01-06 17:47:55,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:47:55,208 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:47:55,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [239551858] [2021-01-06 17:47:55,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:47:55,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:47:55,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:47:55,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 17:47:55,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:47:55,367 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:47:55,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143218128] [2021-01-06 17:47:55,367 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:47:55,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239551858] [2021-01-06 17:47:55,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:47:55,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:47:55,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926930979] [2021-01-06 17:47:55,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:47:55,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:47:55,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:47:55,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:47:55,373 INFO L87 Difference]: Start difference. First operand 111 states and 134 transitions. Second operand 8 states. [2021-01-06 17:47:55,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:47:55,436 INFO L93 Difference]: Finished difference Result 130 states and 154 transitions. [2021-01-06 17:47:55,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:47:55,438 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2021-01-06 17:47:55,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:47:55,439 INFO L225 Difference]: With dead ends: 130 [2021-01-06 17:47:55,439 INFO L226 Difference]: Without dead ends: 120 [2021-01-06 17:47:55,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:47:55,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-01-06 17:47:55,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2021-01-06 17:47:55,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2021-01-06 17:47:55,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 142 transitions. [2021-01-06 17:47:55,452 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 142 transitions. Word has length 40 [2021-01-06 17:47:55,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:47:55,452 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 142 transitions. [2021-01-06 17:47:55,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:47:55,453 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 142 transitions. [2021-01-06 17:47:55,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-06 17:47:55,453 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:47:55,453 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:47:55,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-01-06 17:47:55,667 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]=== [2021-01-06 17:47:55,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:47:55,668 INFO L82 PathProgramCache]: Analyzing trace with hash 2116618682, now seen corresponding path program 2 times [2021-01-06 17:47:55,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:47:55,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897444329] [2021-01-06 17:47:55,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:47:55,677 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:47:55,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2075234447] [2021-01-06 17:47:55,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:47:55,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:47:55,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:47:55,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 17:47:55,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:47:55,848 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:47:55,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897444329] [2021-01-06 17:47:55,849 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:47:55,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075234447] [2021-01-06 17:47:55,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:47:55,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:47:55,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289649337] [2021-01-06 17:47:55,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:47:55,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:47:55,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:47:55,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:47:55,850 INFO L87 Difference]: Start difference. First operand 119 states and 142 transitions. Second operand 8 states. [2021-01-06 17:47:55,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:47:55,933 INFO L93 Difference]: Finished difference Result 129 states and 152 transitions. [2021-01-06 17:47:55,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:47:55,933 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2021-01-06 17:47:55,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:47:55,934 INFO L225 Difference]: With dead ends: 129 [2021-01-06 17:47:55,934 INFO L226 Difference]: Without dead ends: 121 [2021-01-06 17:47:55,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:47:55,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-01-06 17:47:55,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2021-01-06 17:47:55,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2021-01-06 17:47:55,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 144 transitions. [2021-01-06 17:47:55,948 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 144 transitions. Word has length 45 [2021-01-06 17:47:55,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:47:55,948 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 144 transitions. [2021-01-06 17:47:55,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:47:55,949 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 144 transitions. [2021-01-06 17:47:55,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-06 17:47:55,949 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:47:55,949 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:47:56,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-01-06 17:47:56,157 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]=== [2021-01-06 17:47:56,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:47:56,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1302416352, now seen corresponding path program 3 times [2021-01-06 17:47:56,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:47:56,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197228826] [2021-01-06 17:47:56,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:47:56,166 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:47:56,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [163259190] [2021-01-06 17:47:56,166 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 [2021-01-06 17:47:56,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 17:47:56,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:47:56,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 62 conjunts are in the unsatisfiable core [2021-01-06 17:47:56,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:47:57,167 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:47:57,174 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 17:47:57,238 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:47:57,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197228826] [2021-01-06 17:47:57,239 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:47:57,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163259190] [2021-01-06 17:47:57,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:47:57,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-01-06 17:47:57,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292878513] [2021-01-06 17:47:57,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 17:47:57,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:47:57,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 17:47:57,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-01-06 17:47:57,241 INFO L87 Difference]: Start difference. First operand 121 states and 144 transitions. Second operand 17 states. [2021-01-06 17:47:58,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:47:58,964 INFO L93 Difference]: Finished difference Result 171 states and 205 transitions. [2021-01-06 17:47:58,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 17:47:58,965 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 46 [2021-01-06 17:47:58,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:47:58,966 INFO L225 Difference]: With dead ends: 171 [2021-01-06 17:47:58,966 INFO L226 Difference]: Without dead ends: 135 [2021-01-06 17:47:58,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=149, Invalid=663, Unknown=0, NotChecked=0, Total=812 [2021-01-06 17:47:58,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-01-06 17:47:58,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 122. [2021-01-06 17:47:58,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2021-01-06 17:47:58,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 145 transitions. [2021-01-06 17:47:58,987 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 145 transitions. Word has length 46 [2021-01-06 17:47:58,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:47:58,987 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 145 transitions. [2021-01-06 17:47:58,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 17:47:58,987 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 145 transitions. [2021-01-06 17:47:58,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-06 17:47:58,988 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:47:58,988 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:47:59,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-01-06 17:47:59,193 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]=== [2021-01-06 17:47:59,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:47:59,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1720227954, now seen corresponding path program 3 times [2021-01-06 17:47:59,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:47:59,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001151715] [2021-01-06 17:47:59,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:47:59,202 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:47:59,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1243290749] [2021-01-06 17:47:59,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:47:59,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 17:47:59,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:47:59,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-06 17:47:59,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:47:59,416 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:47:59,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001151715] [2021-01-06 17:47:59,416 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:47:59,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243290749] [2021-01-06 17:47:59,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:47:59,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:47:59,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490666637] [2021-01-06 17:47:59,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:47:59,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:47:59,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:47:59,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:47:59,418 INFO L87 Difference]: Start difference. First operand 122 states and 145 transitions. Second operand 9 states. [2021-01-06 17:47:59,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:47:59,498 INFO L93 Difference]: Finished difference Result 152 states and 180 transitions. [2021-01-06 17:47:59,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:47:59,499 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2021-01-06 17:47:59,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:47:59,500 INFO L225 Difference]: With dead ends: 152 [2021-01-06 17:47:59,500 INFO L226 Difference]: Without dead ends: 142 [2021-01-06 17:47:59,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:47:59,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-01-06 17:47:59,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2021-01-06 17:47:59,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2021-01-06 17:47:59,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 166 transitions. [2021-01-06 17:47:59,516 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 166 transitions. Word has length 47 [2021-01-06 17:47:59,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:47:59,516 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 166 transitions. [2021-01-06 17:47:59,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:47:59,516 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 166 transitions. [2021-01-06 17:47:59,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-06 17:47:59,517 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:47:59,517 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:47:59,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-01-06 17:47:59,731 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]=== [2021-01-06 17:47:59,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:47:59,732 INFO L82 PathProgramCache]: Analyzing trace with hash -572369234, now seen corresponding path program 4 times [2021-01-06 17:47:59,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:47:59,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280933846] [2021-01-06 17:47:59,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:47:59,745 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:47:59,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1808150046] [2021-01-06 17:47:59,745 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 [2021-01-06 17:47:59,905 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 17:47:59,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:47:59,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 48 conjunts are in the unsatisfiable core [2021-01-06 17:47:59,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:48:00,448 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:48:00,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280933846] [2021-01-06 17:48:00,449 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:48:00,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808150046] [2021-01-06 17:48:00,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:48:00,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-01-06 17:48:00,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746902674] [2021-01-06 17:48:00,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 17:48:00,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:00,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 17:48:00,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:48:00,450 INFO L87 Difference]: Start difference. First operand 141 states and 166 transitions. Second operand 13 states. [2021-01-06 17:48:01,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:01,748 INFO L93 Difference]: Finished difference Result 201 states and 241 transitions. [2021-01-06 17:48:01,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 17:48:01,749 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 47 [2021-01-06 17:48:01,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:01,751 INFO L225 Difference]: With dead ends: 201 [2021-01-06 17:48:01,751 INFO L226 Difference]: Without dead ends: 162 [2021-01-06 17:48:01,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2021-01-06 17:48:01,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-01-06 17:48:01,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 143. [2021-01-06 17:48:01,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2021-01-06 17:48:01,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 168 transitions. [2021-01-06 17:48:01,771 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 168 transitions. Word has length 47 [2021-01-06 17:48:01,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:01,772 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 168 transitions. [2021-01-06 17:48:01,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 17:48:01,772 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 168 transitions. [2021-01-06 17:48:01,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-06 17:48:01,772 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:01,773 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:48:01,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:01,986 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]=== [2021-01-06 17:48:01,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:01,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1786473789, now seen corresponding path program 2 times [2021-01-06 17:48:01,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:01,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894636814] [2021-01-06 17:48:01,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:01,996 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:48:01,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [842025423] [2021-01-06 17:48:01,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:02,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:48:02,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:48:02,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 60 conjunts are in the unsatisfiable core [2021-01-06 17:48:02,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:48:03,161 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 32 [2021-01-06 17:48:03,321 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:48:03,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894636814] [2021-01-06 17:48:03,321 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:48:03,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842025423] [2021-01-06 17:48:03,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:48:03,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-01-06 17:48:03,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203856866] [2021-01-06 17:48:03,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-06 17:48:03,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:03,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-06 17:48:03,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:48:03,323 INFO L87 Difference]: Start difference. First operand 143 states and 168 transitions. Second operand 18 states. [2021-01-06 17:48:05,007 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2021-01-06 17:48:05,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:05,189 INFO L93 Difference]: Finished difference Result 179 states and 212 transitions. [2021-01-06 17:48:05,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 17:48:05,190 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 48 [2021-01-06 17:48:05,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:05,191 INFO L225 Difference]: With dead ends: 179 [2021-01-06 17:48:05,191 INFO L226 Difference]: Without dead ends: 151 [2021-01-06 17:48:05,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2021-01-06 17:48:05,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-01-06 17:48:05,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2021-01-06 17:48:05,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2021-01-06 17:48:05,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 174 transitions. [2021-01-06 17:48:05,215 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 174 transitions. Word has length 48 [2021-01-06 17:48:05,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:05,215 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 174 transitions. [2021-01-06 17:48:05,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-06 17:48:05,215 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 174 transitions. [2021-01-06 17:48:05,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-06 17:48:05,216 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:05,216 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:48:05,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-01-06 17:48:05,427 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]=== [2021-01-06 17:48:05,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:05,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1895924060, now seen corresponding path program 2 times [2021-01-06 17:48:05,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:05,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558156119] [2021-01-06 17:48:05,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:05,437 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:48:05,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1084445030] [2021-01-06 17:48:05,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:05,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-06 17:48:05,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:48:05,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 17:48:05,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:48:07,709 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:48:14,256 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:48:20,325 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:48:22,346 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:48:24,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558156119] [2021-01-06 17:48:24,366 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:48:24,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084445030] [2021-01-06 17:48:24,366 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2021-01-06 17:48:24,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:48:24,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-01-06 17:48:24,366 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-01-06 17:48:24,366 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 17:48:24,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:24,592 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-01-06 17:48:24,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:48:24 BoogieIcfgContainer [2021-01-06 17:48:24,593 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:48:24,594 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:48:24,594 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:48:24,594 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:48:24,594 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:45:33" (3/4) ... [2021-01-06 17:48:24,597 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 17:48:24,598 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:48:24,599 INFO L168 Benchmark]: Toolchain (without parser) took 171517.05 ms. Allocated memory was 161.5 MB in the beginning and 254.8 MB in the end (delta: 93.3 MB). Free memory was 135.7 MB in the beginning and 98.9 MB in the end (delta: 36.8 MB). Peak memory consumption was 130.3 MB. Max. memory is 8.0 GB. [2021-01-06 17:48:24,600 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 161.5 MB. Free memory is still 132.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:48:24,600 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.53 ms. Allocated memory is still 161.5 MB. Free memory was 135.5 MB in the beginning and 125.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 17:48:24,600 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.64 ms. Allocated memory is still 161.5 MB. Free memory was 125.4 MB in the beginning and 123.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:48:24,601 INFO L168 Benchmark]: Boogie Preprocessor took 54.57 ms. Allocated memory is still 161.5 MB. Free memory was 123.7 MB in the beginning and 122.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:48:24,601 INFO L168 Benchmark]: RCFGBuilder took 541.31 ms. Allocated memory is still 161.5 MB. Free memory was 122.5 MB in the beginning and 142.0 MB in the end (delta: -19.5 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:48:24,602 INFO L168 Benchmark]: TraceAbstraction took 170592.78 ms. Allocated memory was 161.5 MB in the beginning and 254.8 MB in the end (delta: 93.3 MB). Free memory was 141.5 MB in the beginning and 98.9 MB in the end (delta: 42.5 MB). Peak memory consumption was 136.4 MB. Max. memory is 8.0 GB. [2021-01-06 17:48:24,602 INFO L168 Benchmark]: Witness Printer took 4.06 ms. Allocated memory is still 254.8 MB. Free memory is still 98.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:48:24,604 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 161.5 MB. Free memory is still 132.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 269.53 ms. Allocated memory is still 161.5 MB. Free memory was 135.5 MB in the beginning and 125.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 40.64 ms. Allocated memory is still 161.5 MB. Free memory was 125.4 MB in the beginning and 123.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 54.57 ms. Allocated memory is still 161.5 MB. Free memory was 123.7 MB in the beginning and 122.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 541.31 ms. Allocated memory is still 161.5 MB. Free memory was 122.5 MB in the beginning and 142.0 MB in the end (delta: -19.5 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 170592.78 ms. Allocated memory was 161.5 MB in the beginning and 254.8 MB in the end (delta: 93.3 MB). Free memory was 141.5 MB in the beginning and 98.9 MB in the end (delta: 42.5 MB). Peak memory consumption was 136.4 MB. Max. memory is 8.0 GB. * Witness Printer took 4.06 ms. Allocated memory is still 254.8 MB. Free memory is still 98.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L22] int counter = 0; [L24] unsigned int A, B; [L25] long long r, d, p, q; [L26] A = __VERIFIER_nondet_uint() [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 [L35] EXPR counter++ [L35] COND TRUE counter++<100 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p [L35] EXPR counter++ [L35] COND TRUE counter++<100 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p [L35] EXPR counter++ [L35] COND TRUE counter++<100 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND TRUE !(r >= d) [L45] EXPR counter++ [L45] COND TRUE counter++<100 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L49] COND FALSE !(!(p != 1)) [L51] d = d / 2 [L52] p = p / 2 [L53] COND TRUE r >= d [L54] r = r - d [L55] q = q + p [L45] EXPR counter++ [L45] COND TRUE counter++<100 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L49] COND FALSE !(!(p != 1)) [L51] d = d / 2 [L52] p = p / 2 [L53] COND TRUE r >= d [L54] r = r - d [L55] q = q + p [L45] EXPR counter++ [L45] COND TRUE counter++<100 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L49] COND TRUE !(p != 1) [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 170.5s, OverallIterations: 28, TraceHistogramMax: 5, AutomataDifference: 135.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 861 SDtfs, 2256 SDslu, 2694 SDs, 0 SdLazy, 3232 SolverSat, 625 SolverUnsat, 32 SolverUnknown, 0 SolverNotchecked, 72.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 879 GetRequests, 574 SyntacticMatches, 1 SemanticMatches, 304 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 66.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=149occurred in iteration=27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 27 MinimizatonAttempts, 261 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 783 NumberOfCodeBlocks, 735 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 756 ConstructedInterpolants, 1 QuantifiedInterpolants, 337085 SizeOfPredicates, 182 NumberOfNonLiveVariables, 2972 ConjunctsInSsa, 553 ConjunctsInUnsatCore, 27 InterpolantComputations, 8 PerfectInterpolantSequences, 51/491 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...