/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:55:46,747 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:55:46,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:55:46,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:55:46,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:55:46,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:55:46,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:55:46,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:55:46,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:55:46,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:55:46,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:55:46,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:55:46,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:55:46,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:55:46,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:55:46,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:55:46,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:55:46,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:55:46,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:55:46,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:55:46,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:55:46,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:55:46,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:55:46,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:55:46,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:55:46,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:55:46,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:55:46,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:55:46,845 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 07:55:46,878 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:55:46,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:55:46,880 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:55:46,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:55:46,880 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:55:46,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:55:46,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:55:46,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:55:46,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:55:46,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:55:46,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:55:46,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:55:46,882 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:55:46,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:55:46,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:55:46,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:55:46,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:55:46,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:55:46,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:55:46,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:55:46,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:55:46,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:55:46,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:55:46,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:55:46,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:55:46,888 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:55:47,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:55:47,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:55:47,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:55:47,417 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:55:47,418 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:55:47,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound20.c [2020-12-23 07:55:47,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0327018ff/95d5871e2688409ab6f9c70b775a55e0/FLAG51495dc64 [2020-12-23 07:55:48,180 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:55:48,180 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound20.c [2020-12-23 07:55:48,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0327018ff/95d5871e2688409ab6f9c70b775a55e0/FLAG51495dc64 [2020-12-23 07:55:48,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0327018ff/95d5871e2688409ab6f9c70b775a55e0 [2020-12-23 07:55:48,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:55:48,555 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:55:48,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:55:48,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:55:48,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:55:48,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:55:48" (1/1) ... [2020-12-23 07:55:48,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7709bf2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:48, skipping insertion in model container [2020-12-23 07:55:48,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:55:48" (1/1) ... [2020-12-23 07:55:48,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:55:48,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:55:48,757 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound20.c[526,539] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2020-12-23 07:55:48,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:55:48,803 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:55:48,823 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound20.c[526,539] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2020-12-23 07:55:48,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:55:48,876 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:55:48,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:48 WrapperNode [2020-12-23 07:55:48,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:55:48,881 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:55:48,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:55:48,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:55:48,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:48" (1/1) ... [2020-12-23 07:55:48,904 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:48" (1/1) ... [2020-12-23 07:55:48,943 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:55:48,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:55:48,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:55:48,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:55:48,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:48" (1/1) ... [2020-12-23 07:55:48,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:48" (1/1) ... [2020-12-23 07:55:48,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:48" (1/1) ... [2020-12-23 07:55:48,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:48" (1/1) ... [2020-12-23 07:55:48,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:48" (1/1) ... [2020-12-23 07:55:48,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:48" (1/1) ... [2020-12-23 07:55:49,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:48" (1/1) ... [2020-12-23 07:55:49,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:55:49,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:55:49,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:55:49,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:55:49,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:55:49,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:55:49,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:55:49,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:55:49,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:55:49,575 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:55:49,575 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-23 07:55:49,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:55:49 BoogieIcfgContainer [2020-12-23 07:55:49,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:55:49,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:55:49,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:55:49,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:55:49,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:55:48" (1/3) ... [2020-12-23 07:55:49,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189c02e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:55:49, skipping insertion in model container [2020-12-23 07:55:49,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:48" (2/3) ... [2020-12-23 07:55:49,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189c02e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:55:49, skipping insertion in model container [2020-12-23 07:55:49,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:55:49" (3/3) ... [2020-12-23 07:55:49,650 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_valuebound20.c [2020-12-23 07:55:49,664 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:55:49,669 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-23 07:55:49,689 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-23 07:55:49,716 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:55:49,717 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:55:49,717 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:55:49,717 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:55:49,717 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:55:49,717 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:55:49,717 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:55:49,718 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:55:49,735 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-12-23 07:55:49,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 07:55:49,741 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:49,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:49,743 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:49,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:49,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-12-23 07:55:49,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:49,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566191523] [2020-12-23 07:55:49,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:49,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:49,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566191523] [2020-12-23 07:55:49,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:49,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:55:49,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768185983] [2020-12-23 07:55:49,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:55:49,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:49,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:55:49,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:55:49,961 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2020-12-23 07:55:49,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:49,985 INFO L93 Difference]: Finished difference Result 75 states and 102 transitions. [2020-12-23 07:55:49,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:55:49,987 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-23 07:55:49,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:49,998 INFO L225 Difference]: With dead ends: 75 [2020-12-23 07:55:49,999 INFO L226 Difference]: Without dead ends: 35 [2020-12-23 07:55:50,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:55:50,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-23 07:55:50,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-12-23 07:55:50,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 07:55:50,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-12-23 07:55:50,045 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 7 [2020-12-23 07:55:50,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:50,045 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-12-23 07:55:50,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:55:50,046 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-12-23 07:55:50,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 07:55:50,046 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:50,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:50,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:55:50,047 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:50,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:50,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-12-23 07:55:50,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:50,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098544467] [2020-12-23 07:55:50,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:50,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:50,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098544467] [2020-12-23 07:55:50,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:50,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:55:50,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257500656] [2020-12-23 07:55:50,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:55:50,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:50,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:55:50,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:55:50,134 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 4 states. [2020-12-23 07:55:50,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:50,261 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2020-12-23 07:55:50,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:55:50,261 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-23 07:55:50,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:50,263 INFO L225 Difference]: With dead ends: 54 [2020-12-23 07:55:50,263 INFO L226 Difference]: Without dead ends: 52 [2020-12-23 07:55:50,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:55:50,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-23 07:55:50,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2020-12-23 07:55:50,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-23 07:55:50,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-12-23 07:55:50,277 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 7 [2020-12-23 07:55:50,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:50,278 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-12-23 07:55:50,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:55:50,278 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-12-23 07:55:50,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 07:55:50,279 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:50,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:50,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 07:55:50,281 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:50,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:50,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2020-12-23 07:55:50,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:50,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433931690] [2020-12-23 07:55:50,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:50,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:50,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433931690] [2020-12-23 07:55:50,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:50,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:55:50,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605697843] [2020-12-23 07:55:50,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:55:50,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:50,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:55:50,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:55:50,393 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 4 states. [2020-12-23 07:55:50,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:50,464 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2020-12-23 07:55:50,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:55:50,465 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-23 07:55:50,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:50,466 INFO L225 Difference]: With dead ends: 52 [2020-12-23 07:55:50,466 INFO L226 Difference]: Without dead ends: 50 [2020-12-23 07:55:50,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:55:50,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-23 07:55:50,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 31. [2020-12-23 07:55:50,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-23 07:55:50,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-12-23 07:55:50,475 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 9 [2020-12-23 07:55:50,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:50,475 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-12-23 07:55:50,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:55:50,475 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-12-23 07:55:50,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:55:50,476 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:50,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:50,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 07:55:50,476 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:50,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:50,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2020-12-23 07:55:50,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:50,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746219631] [2020-12-23 07:55:50,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:50,494 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:50,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1042609640] [2020-12-23 07:55:50,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:50,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-23 07:55:50,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:50,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:50,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746219631] [2020-12-23 07:55:50,657 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:50,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042609640] [2020-12-23 07:55:50,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:50,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:55:50,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532691017] [2020-12-23 07:55:50,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:55:50,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:50,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:55:50,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:55:50,660 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 6 states. [2020-12-23 07:55:50,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:50,789 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2020-12-23 07:55:50,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:55:50,790 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-23 07:55:50,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:50,791 INFO L225 Difference]: With dead ends: 72 [2020-12-23 07:55:50,791 INFO L226 Difference]: Without dead ends: 50 [2020-12-23 07:55:50,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:55:50,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-23 07:55:50,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-12-23 07:55:50,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-23 07:55:50,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-12-23 07:55:50,807 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 11 [2020-12-23 07:55:50,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:50,808 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-12-23 07:55:50,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:55:50,808 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-12-23 07:55:50,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 07:55:50,809 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:50,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:51,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:51,025 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:51,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:51,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1783857492, now seen corresponding path program 1 times [2020-12-23 07:55:51,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:51,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890643968] [2020-12-23 07:55:51,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:51,043 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:51,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1742158579] [2020-12-23 07:55:51,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:51,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:55:51,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:51,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:51,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890643968] [2020-12-23 07:55:51,198 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:51,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742158579] [2020-12-23 07:55:51,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:51,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:55:51,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393461845] [2020-12-23 07:55:51,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:55:51,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:51,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:55:51,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:55:51,201 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 5 states. [2020-12-23 07:55:51,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:51,287 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-12-23 07:55:51,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:55:51,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-23 07:55:51,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:51,289 INFO L225 Difference]: With dead ends: 63 [2020-12-23 07:55:51,289 INFO L226 Difference]: Without dead ends: 52 [2020-12-23 07:55:51,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:55:51,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-23 07:55:51,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-12-23 07:55:51,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 07:55:51,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-12-23 07:55:51,298 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2020-12-23 07:55:51,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:51,299 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-12-23 07:55:51,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:55:51,299 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-12-23 07:55:51,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 07:55:51,300 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:51,300 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:51,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:51,515 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:51,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:51,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1907209632, now seen corresponding path program 1 times [2020-12-23 07:55:51,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:51,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212907053] [2020-12-23 07:55:51,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:51,541 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:51,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1940992341] [2020-12-23 07:55:51,542 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 [2020-12-23 07:55:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:51,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 07:55:51,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:51,707 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:51,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212907053] [2020-12-23 07:55:51,707 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:51,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940992341] [2020-12-23 07:55:51,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:51,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:55:51,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741673635] [2020-12-23 07:55:51,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:55:51,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:51,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:55:51,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:55:51,711 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 7 states. [2020-12-23 07:55:51,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:51,881 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2020-12-23 07:55:51,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:55:51,882 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-23 07:55:51,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:51,883 INFO L225 Difference]: With dead ends: 98 [2020-12-23 07:55:51,883 INFO L226 Difference]: Without dead ends: 61 [2020-12-23 07:55:51,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:55:51,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-23 07:55:51,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-12-23 07:55:51,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-23 07:55:51,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2020-12-23 07:55:51,893 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 18 [2020-12-23 07:55:51,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:51,893 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2020-12-23 07:55:51,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:55:51,894 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2020-12-23 07:55:51,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 07:55:51,894 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:51,895 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:52,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:52,111 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:52,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:52,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1115495499, now seen corresponding path program 2 times [2020-12-23 07:55:52,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:52,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827117927] [2020-12-23 07:55:52,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:52,135 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:52,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [823994676] [2020-12-23 07:55:52,137 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:52,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:55:52,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:52,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-23 07:55:52,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:52,347 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:52,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827117927] [2020-12-23 07:55:52,350 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:52,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823994676] [2020-12-23 07:55:52,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:52,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:55:52,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577527460] [2020-12-23 07:55:52,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:55:52,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:52,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:55:52,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:55:52,354 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand 8 states. [2020-12-23 07:55:52,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:52,600 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2020-12-23 07:55:52,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:55:52,601 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-12-23 07:55:52,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:52,604 INFO L225 Difference]: With dead ends: 103 [2020-12-23 07:55:52,605 INFO L226 Difference]: Without dead ends: 89 [2020-12-23 07:55:52,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:55:52,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-23 07:55:52,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2020-12-23 07:55:52,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-23 07:55:52,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-12-23 07:55:52,621 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 25 [2020-12-23 07:55:52,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:52,621 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-12-23 07:55:52,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:55:52,622 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-12-23 07:55:52,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 07:55:52,623 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:52,623 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:52,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:52,837 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:52,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:52,838 INFO L82 PathProgramCache]: Analyzing trace with hash 115055918, now seen corresponding path program 1 times [2020-12-23 07:55:52,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:52,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242145388] [2020-12-23 07:55:52,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:52,852 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:52,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73891582] [2020-12-23 07:55:52,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:52,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-23 07:55:52,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:53,072 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:53,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242145388] [2020-12-23 07:55:53,072 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:53,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73891582] [2020-12-23 07:55:53,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:53,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:55:53,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411245137] [2020-12-23 07:55:53,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:55:53,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:53,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:55:53,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:55:53,075 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 7 states. [2020-12-23 07:55:53,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:53,244 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2020-12-23 07:55:53,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:55:53,244 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-12-23 07:55:53,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:53,246 INFO L225 Difference]: With dead ends: 101 [2020-12-23 07:55:53,246 INFO L226 Difference]: Without dead ends: 99 [2020-12-23 07:55:53,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:55:53,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-12-23 07:55:53,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 88. [2020-12-23 07:55:53,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-23 07:55:53,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 100 transitions. [2020-12-23 07:55:53,260 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 100 transitions. Word has length 27 [2020-12-23 07:55:53,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:53,260 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 100 transitions. [2020-12-23 07:55:53,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:55:53,260 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 100 transitions. [2020-12-23 07:55:53,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 07:55:53,261 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:53,261 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:53,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:53,476 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:53,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:53,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1100255215, now seen corresponding path program 1 times [2020-12-23 07:55:53,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:53,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075202826] [2020-12-23 07:55:53,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:53,494 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:53,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1408778872] [2020-12-23 07:55:53,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:53,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-23 07:55:53,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:53,666 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:53,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075202826] [2020-12-23 07:55:53,667 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:53,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408778872] [2020-12-23 07:55:53,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:53,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:55:53,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965252194] [2020-12-23 07:55:53,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:55:53,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:53,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:55:53,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:55:53,669 INFO L87 Difference]: Start difference. First operand 88 states and 100 transitions. Second operand 8 states. [2020-12-23 07:55:53,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:53,841 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2020-12-23 07:55:53,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:55:53,841 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-12-23 07:55:53,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:53,842 INFO L225 Difference]: With dead ends: 117 [2020-12-23 07:55:53,843 INFO L226 Difference]: Without dead ends: 91 [2020-12-23 07:55:53,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:55:53,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-12-23 07:55:53,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2020-12-23 07:55:53,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-23 07:55:53,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2020-12-23 07:55:53,854 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 29 [2020-12-23 07:55:53,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:53,855 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2020-12-23 07:55:53,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:55:53,855 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2020-12-23 07:55:53,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 07:55:53,856 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:53,856 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:54,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:54,072 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:54,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:54,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1492250324, now seen corresponding path program 1 times [2020-12-23 07:55:54,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:54,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346081919] [2020-12-23 07:55:54,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:54,086 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:54,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [545947614] [2020-12-23 07:55:54,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:54,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 07:55:54,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:54,265 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:54,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346081919] [2020-12-23 07:55:54,266 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:54,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545947614] [2020-12-23 07:55:54,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:54,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:55:54,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893791466] [2020-12-23 07:55:54,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:55:54,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:54,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:55:54,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:55:54,268 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand 8 states. [2020-12-23 07:55:54,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:54,436 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2020-12-23 07:55:54,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:55:54,436 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-12-23 07:55:54,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:54,437 INFO L225 Difference]: With dead ends: 91 [2020-12-23 07:55:54,437 INFO L226 Difference]: Without dead ends: 76 [2020-12-23 07:55:54,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:55:54,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-23 07:55:54,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-12-23 07:55:54,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-23 07:55:54,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2020-12-23 07:55:54,447 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 32 [2020-12-23 07:55:54,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:54,447 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2020-12-23 07:55:54,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:55:54,447 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2020-12-23 07:55:54,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 07:55:54,448 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:54,448 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:54,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 07:55:54,663 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:54,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:54,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1670816768, now seen corresponding path program 3 times [2020-12-23 07:55:54,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:54,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397346790] [2020-12-23 07:55:54,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:54,681 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:54,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1365312266] [2020-12-23 07:55:54,682 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:54,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:55:54,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:54,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-23 07:55:54,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:54,919 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-23 07:55:54,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397346790] [2020-12-23 07:55:54,920 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:54,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365312266] [2020-12-23 07:55:54,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:54,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:55:54,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403933804] [2020-12-23 07:55:54,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:55:54,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:54,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:55:54,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:55:54,922 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand 9 states. [2020-12-23 07:55:55,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:55,154 INFO L93 Difference]: Finished difference Result 94 states and 101 transitions. [2020-12-23 07:55:55,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:55:55,155 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-12-23 07:55:55,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:55,156 INFO L225 Difference]: With dead ends: 94 [2020-12-23 07:55:55,156 INFO L226 Difference]: Without dead ends: 84 [2020-12-23 07:55:55,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:55:55,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-23 07:55:55,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 74. [2020-12-23 07:55:55,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-23 07:55:55,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2020-12-23 07:55:55,168 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 32 [2020-12-23 07:55:55,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:55,168 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2020-12-23 07:55:55,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:55:55,168 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2020-12-23 07:55:55,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 07:55:55,169 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:55,169 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:55,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-23 07:55:55,384 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:55,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:55,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1996519097, now seen corresponding path program 2 times [2020-12-23 07:55:55,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:55,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308275860] [2020-12-23 07:55:55,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:55,396 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:55,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [217395861] [2020-12-23 07:55:55,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:55,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:55:55,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:55,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-23 07:55:55,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:55,637 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:55,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308275860] [2020-12-23 07:55:55,641 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:55,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217395861] [2020-12-23 07:55:55,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:55,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:55:55,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321939968] [2020-12-23 07:55:55,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:55:55,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:55,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:55:55,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:55:55,643 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand 8 states. [2020-12-23 07:55:55,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:55,933 INFO L93 Difference]: Finished difference Result 133 states and 147 transitions. [2020-12-23 07:55:55,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:55:55,934 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-12-23 07:55:55,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:55,935 INFO L225 Difference]: With dead ends: 133 [2020-12-23 07:55:55,935 INFO L226 Difference]: Without dead ends: 98 [2020-12-23 07:55:55,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:55:55,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-12-23 07:55:55,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 86. [2020-12-23 07:55:55,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-23 07:55:55,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2020-12-23 07:55:55,946 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 34 [2020-12-23 07:55:55,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:55,947 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2020-12-23 07:55:55,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:55:55,947 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2020-12-23 07:55:55,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-23 07:55:55,948 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:55,948 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:56,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:56,163 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:56,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:56,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1415019748, now seen corresponding path program 1 times [2020-12-23 07:55:56,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:56,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418043846] [2020-12-23 07:55:56,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:56,175 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:56,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1223544722] [2020-12-23 07:55:56,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:56,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 07:55:56,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:56,405 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 07:55:56,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418043846] [2020-12-23 07:55:56,406 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:56,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223544722] [2020-12-23 07:55:56,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:56,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:55:56,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150157717] [2020-12-23 07:55:56,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:55:56,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:56,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:55:56,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:55:56,408 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand 6 states. [2020-12-23 07:55:56,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:56,514 INFO L93 Difference]: Finished difference Result 146 states and 161 transitions. [2020-12-23 07:55:56,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:55:56,515 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-12-23 07:55:56,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:56,516 INFO L225 Difference]: With dead ends: 146 [2020-12-23 07:55:56,516 INFO L226 Difference]: Without dead ends: 114 [2020-12-23 07:55:56,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:55:56,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-12-23 07:55:56,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 73. [2020-12-23 07:55:56,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-23 07:55:56,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2020-12-23 07:55:56,529 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 40 [2020-12-23 07:55:56,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:56,529 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 79 transitions. [2020-12-23 07:55:56,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:55:56,530 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 79 transitions. [2020-12-23 07:55:56,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-23 07:55:56,531 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:56,531 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:56,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:56,747 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:56,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:56,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1808046758, now seen corresponding path program 3 times [2020-12-23 07:55:56,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:56,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830708343] [2020-12-23 07:55:56,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:56,777 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:56,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [571962259] [2020-12-23 07:55:56,777 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:56,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 07:55:56,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:56,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 51 conjunts are in the unsatisfiable core [2020-12-23 07:55:56,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:57,136 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:57,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830708343] [2020-12-23 07:55:57,137 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:57,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571962259] [2020-12-23 07:55:57,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:57,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-23 07:55:57,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397959532] [2020-12-23 07:55:57,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 07:55:57,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:57,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 07:55:57,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:55:57,139 INFO L87 Difference]: Start difference. First operand 73 states and 79 transitions. Second operand 12 states. [2020-12-23 07:55:57,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:57,666 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2020-12-23 07:55:57,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 07:55:57,667 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-12-23 07:55:57,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:57,668 INFO L225 Difference]: With dead ends: 119 [2020-12-23 07:55:57,668 INFO L226 Difference]: Without dead ends: 86 [2020-12-23 07:55:57,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2020-12-23 07:55:57,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-12-23 07:55:57,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 74. [2020-12-23 07:55:57,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-23 07:55:57,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2020-12-23 07:55:57,678 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 40 [2020-12-23 07:55:57,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:57,678 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2020-12-23 07:55:57,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 07:55:57,679 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2020-12-23 07:55:57,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-23 07:55:57,680 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:57,680 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:57,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 07:55:57,895 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:57,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:57,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1666655538, now seen corresponding path program 4 times [2020-12-23 07:55:57,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:57,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103000680] [2020-12-23 07:55:57,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:57,907 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:57,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [938509137] [2020-12-23 07:55:57,908 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:57,959 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 07:55:57,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:57,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 43 conjunts are in the unsatisfiable core [2020-12-23 07:55:57,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:58,137 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:58,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103000680] [2020-12-23 07:55:58,138 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:58,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938509137] [2020-12-23 07:55:58,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:58,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:55:58,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651251625] [2020-12-23 07:55:58,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:55:58,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:58,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:55:58,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:55:58,140 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand 9 states. [2020-12-23 07:55:58,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:58,461 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2020-12-23 07:55:58,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:55:58,461 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2020-12-23 07:55:58,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:58,462 INFO L225 Difference]: With dead ends: 107 [2020-12-23 07:55:58,462 INFO L226 Difference]: Without dead ends: 105 [2020-12-23 07:55:58,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:55:58,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-12-23 07:55:58,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 81. [2020-12-23 07:55:58,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-23 07:55:58,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2020-12-23 07:55:58,473 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 41 [2020-12-23 07:55:58,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:58,474 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2020-12-23 07:55:58,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:55:58,474 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2020-12-23 07:55:58,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-23 07:55:58,475 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:58,475 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:58,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-23 07:55:58,690 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:58,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:58,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1928663159, now seen corresponding path program 2 times [2020-12-23 07:55:58,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:58,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031173081] [2020-12-23 07:55:58,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:58,700 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:58,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1231380195] [2020-12-23 07:55:58,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:58,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:55:58,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:58,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 50 conjunts are in the unsatisfiable core [2020-12-23 07:55:58,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:59,137 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:59,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031173081] [2020-12-23 07:55:59,138 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:59,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231380195] [2020-12-23 07:55:59,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:59,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-23 07:55:59,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242195112] [2020-12-23 07:55:59,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 07:55:59,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:59,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 07:55:59,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:55:59,140 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand 13 states. [2020-12-23 07:55:59,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:59,675 INFO L93 Difference]: Finished difference Result 122 states and 135 transitions. [2020-12-23 07:55:59,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:55:59,676 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-12-23 07:55:59,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:59,676 INFO L225 Difference]: With dead ends: 122 [2020-12-23 07:55:59,677 INFO L226 Difference]: Without dead ends: 96 [2020-12-23 07:55:59,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2020-12-23 07:55:59,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-12-23 07:55:59,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-12-23 07:55:59,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-12-23 07:55:59,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2020-12-23 07:55:59,688 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 42 [2020-12-23 07:55:59,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:59,688 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2020-12-23 07:55:59,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 07:55:59,688 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2020-12-23 07:55:59,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-23 07:55:59,689 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:59,689 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:59,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-23 07:55:59,902 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:59,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:59,903 INFO L82 PathProgramCache]: Analyzing trace with hash 366986673, now seen corresponding path program 3 times [2020-12-23 07:55:59,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:59,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543746272] [2020-12-23 07:55:59,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:59,914 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:59,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [650419955] [2020-12-23 07:55:59,914 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:56:00,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:56:00,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:56:00,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 50 conjunts are in the unsatisfiable core [2020-12-23 07:56:00,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:56:00,429 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-12-23 07:56:00,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543746272] [2020-12-23 07:56:00,430 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:56:00,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650419955] [2020-12-23 07:56:00,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:56:00,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-12-23 07:56:00,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280799305] [2020-12-23 07:56:00,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-23 07:56:00,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:56:00,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-23 07:56:00,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-12-23 07:56:00,432 INFO L87 Difference]: Start difference. First operand 94 states and 101 transitions. Second operand 14 states. [2020-12-23 07:56:01,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:56:01,026 INFO L93 Difference]: Finished difference Result 114 states and 124 transitions. [2020-12-23 07:56:01,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:56:01,026 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-12-23 07:56:01,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:56:01,027 INFO L225 Difference]: With dead ends: 114 [2020-12-23 07:56:01,027 INFO L226 Difference]: Without dead ends: 110 [2020-12-23 07:56:01,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2020-12-23 07:56:01,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-12-23 07:56:01,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 94. [2020-12-23 07:56:01,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-12-23 07:56:01,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 100 transitions. [2020-12-23 07:56:01,044 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 100 transitions. Word has length 43 [2020-12-23 07:56:01,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:56:01,044 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 100 transitions. [2020-12-23 07:56:01,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-23 07:56:01,044 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 100 transitions. [2020-12-23 07:56:01,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-23 07:56:01,045 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:56:01,045 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:56:01,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:56:01,260 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:56:01,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:56:01,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1273273436, now seen corresponding path program 2 times [2020-12-23 07:56:01,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:56:01,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9107246] [2020-12-23 07:56:01,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:56:01,271 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:56:01,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [114945218] [2020-12-23 07:56:01,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:56:01,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 07:56:01,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:56:01,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-23 07:56:01,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:56:01,498 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-23 07:56:01,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9107246] [2020-12-23 07:56:01,498 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:56:01,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114945218] [2020-12-23 07:56:01,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:56:01,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:56:01,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878751855] [2020-12-23 07:56:01,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:56:01,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:56:01,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:56:01,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:56:01,500 INFO L87 Difference]: Start difference. First operand 94 states and 100 transitions. Second operand 11 states. [2020-12-23 07:56:01,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:56:01,812 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2020-12-23 07:56:01,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:56:01,813 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-12-23 07:56:01,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:56:01,814 INFO L225 Difference]: With dead ends: 94 [2020-12-23 07:56:01,814 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 07:56:01,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-12-23 07:56:01,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 07:56:01,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 07:56:01,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 07:56:01,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 07:56:01,815 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2020-12-23 07:56:01,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:56:01,816 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 07:56:01,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:56:01,816 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 07:56:01,816 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 07:56:02,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-23 07:56:02,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-23 07:56:04,528 WARN L197 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 55 DAG size of output: 29 [2020-12-23 07:56:04,733 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 30 [2020-12-23 07:56:04,934 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 18 [2020-12-23 07:56:05,173 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2020-12-23 07:56:05,395 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2020-12-23 07:56:05,525 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 12 [2020-12-23 07:56:05,796 WARN L197 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 18 [2020-12-23 07:56:05,800 INFO L192 CegarLoopUtils]: At program point L60(lines 22 61) the Hoare annotation is: true [2020-12-23 07:56:05,801 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-23 07:56:05,801 INFO L189 CegarLoopUtils]: For program point L52(lines 52 55) no Hoare annotation was computed. [2020-12-23 07:56:05,801 INFO L189 CegarLoopUtils]: For program point L52-2(lines 22 61) no Hoare annotation was computed. [2020-12-23 07:56:05,801 INFO L189 CegarLoopUtils]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-12-23 07:56:05,801 INFO L189 CegarLoopUtils]: For program point L44-1(lines 44 56) no Hoare annotation was computed. [2020-12-23 07:56:05,802 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-23 07:56:05,802 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-23 07:56:05,802 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-23 07:56:05,802 INFO L189 CegarLoopUtils]: For program point L12(line 12) no Hoare annotation was computed. [2020-12-23 07:56:05,802 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-23 07:56:05,802 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-23 07:56:05,803 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-23 07:56:05,803 INFO L189 CegarLoopUtils]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-12-23 07:56:05,803 INFO L185 CegarLoopUtils]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse3 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0))) (let ((.cse0 (= ULTIMATE.start_main_~d~0 .cse3)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~q~0 0)) (.cse4 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (and (= ULTIMATE.start_main_~B~0 1) (= (mod ULTIMATE.start_main_~d~0 2) 0) .cse0 .cse1 .cse2 (< 0 .cse3) .cse4 (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0)) (and .cse0 .cse1 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) .cse2 .cse4 (= ULTIMATE.start_main_~d~0 1))))) [2020-12-23 07:56:05,803 INFO L189 CegarLoopUtils]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2020-12-23 07:56:05,804 INFO L185 CegarLoopUtils]: At program point L15-5(lines 14 20) the Hoare annotation is: (let ((.cse3 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0))) (let ((.cse0 (= ULTIMATE.start_main_~d~0 .cse3)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~q~0 0)) (.cse4 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (and (= ULTIMATE.start_main_~B~0 1) (= (mod ULTIMATE.start_main_~d~0 2) 0) .cse0 .cse1 .cse2 (< 0 .cse3) .cse4 (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0)) (and .cse0 .cse1 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) .cse2 .cse4 (= ULTIMATE.start_main_~d~0 1))))) [2020-12-23 07:56:05,804 INFO L189 CegarLoopUtils]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2020-12-23 07:56:05,804 INFO L185 CegarLoopUtils]: At program point L15-8(line 38) the Hoare annotation is: (let ((.cse3 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0))) (let ((.cse0 (= ULTIMATE.start_main_~d~0 .cse3)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~q~0 0)) (.cse4 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (and (= ULTIMATE.start_main_~B~0 1) (= (mod ULTIMATE.start_main_~d~0 2) 0) .cse0 .cse1 .cse2 (< 0 .cse3) .cse4 (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0)) (and .cse0 .cse1 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) .cse2 .cse4 (= ULTIMATE.start_main_~d~0 1))))) [2020-12-23 07:56:05,804 INFO L189 CegarLoopUtils]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2020-12-23 07:56:05,804 INFO L185 CegarLoopUtils]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0))) (and (= ULTIMATE.start_main_~B~0 1) (= ULTIMATE.start_main_~d~0 .cse0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0)) (< 0 .cse0))) [2020-12-23 07:56:05,805 INFO L189 CegarLoopUtils]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2020-12-23 07:56:05,805 INFO L185 CegarLoopUtils]: At program point L15-14(line 48) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0))) (and (= ULTIMATE.start_main_~B~0 1) (= ULTIMATE.start_main_~d~0 .cse0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0)) (< 0 .cse0))) [2020-12-23 07:56:05,805 INFO L189 CegarLoopUtils]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2020-12-23 07:56:05,805 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-23 07:56:05,805 INFO L185 CegarLoopUtils]: At program point L15-17(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_main_~B~0 1) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) (= ULTIMATE.start_main_~p~0 1)) [2020-12-23 07:56:05,805 INFO L189 CegarLoopUtils]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2020-12-23 07:56:05,805 INFO L192 CegarLoopUtils]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2020-12-23 07:56:05,805 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-23 07:56:05,805 INFO L189 CegarLoopUtils]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-12-23 07:56:05,806 INFO L189 CegarLoopUtils]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-12-23 07:56:05,806 INFO L189 CegarLoopUtils]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2020-12-23 07:56:05,806 INFO L189 CegarLoopUtils]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2020-12-23 07:56:05,806 INFO L189 CegarLoopUtils]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2020-12-23 07:56:05,806 INFO L189 CegarLoopUtils]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2020-12-23 07:56:05,806 INFO L189 CegarLoopUtils]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2020-12-23 07:56:05,806 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-23 07:56:05,806 INFO L185 CegarLoopUtils]: At program point L34-2(lines 34 42) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~q~0 0)) (.cse2 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (let ((.cse0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0))) (and (= ULTIMATE.start_main_~B~0 1) (= (mod ULTIMATE.start_main_~d~0 2) 0) (= ULTIMATE.start_main_~d~0 .cse0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 (< 0 .cse0) .cse2 (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0))) (and (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) (= ULTIMATE.start_main_~p~0 1) .cse1 .cse2 (= ULTIMATE.start_main_~d~0 1)))) [2020-12-23 07:56:05,806 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-23 07:56:05,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:56:05 BoogieIcfgContainer [2020-12-23 07:56:05,829 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:56:05,829 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:56:05,829 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:56:05,829 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:56:05,830 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:55:49" (3/4) ... [2020-12-23 07:56:05,833 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 07:56:05,846 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-12-23 07:56:05,846 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 07:56:05,846 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 07:56:05,847 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 07:56:05,901 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/hard2_valuebound20.c-witness.graphml [2020-12-23 07:56:05,901 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:56:05,902 INFO L168 Benchmark]: Toolchain (without parser) took 17348.04 ms. Allocated memory was 155.2 MB in the beginning and 289.4 MB in the end (delta: 134.2 MB). Free memory was 130.0 MB in the beginning and 110.6 MB in the end (delta: 19.4 MB). Peak memory consumption was 154.8 MB. Max. memory is 8.0 GB. [2020-12-23 07:56:05,903 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 155.2 MB. Free memory was 126.5 MB in the beginning and 126.5 MB in the end (delta: 81.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:56:05,903 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.14 ms. Allocated memory is still 155.2 MB. Free memory was 129.8 MB in the beginning and 119.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:56:05,904 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.97 ms. Allocated memory is still 155.2 MB. Free memory was 119.9 MB in the beginning and 118.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:56:05,904 INFO L168 Benchmark]: Boogie Preprocessor took 63.49 ms. Allocated memory is still 155.2 MB. Free memory was 118.3 MB in the beginning and 117.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:56:05,905 INFO L168 Benchmark]: RCFGBuilder took 596.62 ms. Allocated memory is still 155.2 MB. Free memory was 117.1 MB in the beginning and 136.6 MB in the end (delta: -19.6 MB). Peak memory consumption was 20.2 MB. Max. memory is 8.0 GB. [2020-12-23 07:56:05,906 INFO L168 Benchmark]: TraceAbstraction took 16219.86 ms. Allocated memory was 155.2 MB in the beginning and 289.4 MB in the end (delta: 134.2 MB). Free memory was 136.1 MB in the beginning and 113.7 MB in the end (delta: 22.4 MB). Peak memory consumption was 167.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:56:05,906 INFO L168 Benchmark]: Witness Printer took 72.17 ms. Allocated memory is still 289.4 MB. Free memory was 113.7 MB in the beginning and 110.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:56:05,909 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 155.2 MB. Free memory was 126.5 MB in the beginning and 126.5 MB in the end (delta: 81.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 319.14 ms. Allocated memory is still 155.2 MB. Free memory was 129.8 MB in the beginning and 119.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 63.97 ms. Allocated memory is still 155.2 MB. Free memory was 119.9 MB in the beginning and 118.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 63.49 ms. Allocated memory is still 155.2 MB. Free memory was 118.3 MB in the beginning and 117.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 596.62 ms. Allocated memory is still 155.2 MB. Free memory was 117.1 MB in the beginning and 136.6 MB in the end (delta: -19.6 MB). Peak memory consumption was 20.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 16219.86 ms. Allocated memory was 155.2 MB in the beginning and 289.4 MB in the end (delta: 134.2 MB). Free memory was 136.1 MB in the beginning and 113.7 MB in the end (delta: 22.4 MB). Peak memory consumption was 167.1 MB. Max. memory is 8.0 GB. * Witness Printer took 72.17 ms. Allocated memory is still 289.4 MB. Free memory was 113.7 MB in the beginning and 110.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((B == 1 && d % 2 == 0) && d == p * B) && 1 == cond) && q == 0) && 0 < p * B) && A == r) && d * -1 / -2 <= r) || (((((d == p * B && 1 == cond) && B == d) && q == 0) && A == r) && d == 1) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((((B == 1 && d % 2 == 0) && d == p * B) && 1 == cond) && q == 0) && 0 < p * B) && A == r) && d * -1 / -2 <= r) || ((((B == d && p == 1) && q == 0) && A == r) && d == 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: (((B == 1 && d == p * B) && 1 == cond) && A == q + r) && 0 < p * B - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((((B == 1 && d % 2 == 0) && d == p * B) && 1 == cond) && q == 0) && 0 < p * B) && A == r) && d * -1 / -2 <= r) || (((((d == p * B && 1 == cond) && B == d) && q == 0) && A == r) && d == 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((B == 1 && d % 2 == 0) && d == p * B) && 1 == cond) && q == 0) && 0 < p * B) && A == r) && d * -1 / -2 <= r) || (((((d == p * B && 1 == cond) && B == d) && q == 0) && A == r) && d == 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((B == 1 && !(0 == cond)) && B == d) && p == 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((B == 1 && d == p * B) && 1 == cond) && A == q + r) && 0 < p * B - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.3s, OverallIterations: 18, TraceHistogramMax: 4, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 407 SDtfs, 679 SDslu, 1072 SDs, 0 SdLazy, 2560 SolverSat, 491 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 519 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 18 MinimizatonAttempts, 188 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 62 NumberOfFragments, 283 HoareAnnotationTreeSize, 9 FomulaSimplifications, 35170 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 9 FomulaSimplificationsInter, 5800 FormulaSimplificationTreeSizeReductionInter, 3.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 496 NumberOfCodeBlocks, 440 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 478 ConstructedInterpolants, 0 QuantifiedInterpolants, 189867 SizeOfPredicates, 155 NumberOfNonLiveVariables, 1689 ConjunctsInSsa, 495 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 118/343 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 proved your program to be correct! Received shutdown request...