/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_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:55:36,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:55:36,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:55:36,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:55:36,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:55:36,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:55:36,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:55:36,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:55:36,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:55:36,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:55:36,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:55:36,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:55:36,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:55:36,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:55:36,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:55:36,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:55:36,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:55:36,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:55:36,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:55:36,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:55:36,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:55:36,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:55:36,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:55:36,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:55:36,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:55:36,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:55:36,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:55:36,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:55:36,878 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 07:55:36,930 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:55:36,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:55:36,935 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:55:36,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:55:36,936 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:55:36,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:55:36,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:55:36,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:55:36,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:55:36,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:55:36,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:55:36,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:55:36,939 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:55:36,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:55:36,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:55:36,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:55:36,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:55:36,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:55:36,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:55:36,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:55:36,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:55:36,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:55:36,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:55:36,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:55:36,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:55:36,942 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:55:37,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:55:37,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:55:37,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:55:37,383 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:55:37,384 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:55:37,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound10.c [2020-12-23 07:55:37,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2c0f22f6d/162b9d53d95949c9b9d3ee2697ed5040/FLAGc81b2c3c9 [2020-12-23 07:55:37,950 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:55:37,951 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound10.c [2020-12-23 07:55:37,958 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2c0f22f6d/162b9d53d95949c9b9d3ee2697ed5040/FLAGc81b2c3c9 [2020-12-23 07:55:38,330 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2c0f22f6d/162b9d53d95949c9b9d3ee2697ed5040 [2020-12-23 07:55:38,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:55:38,337 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:55:38,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:55:38,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:55:38,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:55:38,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:55:38" (1/1) ... [2020-12-23 07:55:38,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e2b5324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:38, skipping insertion in model container [2020-12-23 07:55:38,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:55:38" (1/1) ... [2020-12-23 07:55:38,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:55:38,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:55:38,600 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_valuebound10.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 07:55:38,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:55:38,645 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:55:38,663 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_valuebound10.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 07:55:38,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:55:38,689 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:55:38,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:38 WrapperNode [2020-12-23 07:55:38,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:55:38,691 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:55:38,691 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:55:38,691 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:55:38,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:38" (1/1) ... [2020-12-23 07:55:38,707 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:38" (1/1) ... [2020-12-23 07:55:38,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:55:38,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:55:38,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:55:38,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:55:38,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:38" (1/1) ... [2020-12-23 07:55:38,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:38" (1/1) ... [2020-12-23 07:55:38,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:38" (1/1) ... [2020-12-23 07:55:38,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:38" (1/1) ... [2020-12-23 07:55:38,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:38" (1/1) ... [2020-12-23 07:55:38,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:38" (1/1) ... [2020-12-23 07:55:38,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:38" (1/1) ... [2020-12-23 07:55:38,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:55:38,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:55:38,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:55:38,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:55:38,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:38" (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 07:55:38,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:55:38,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:55:38,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:55:38,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:55:39,357 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:55:39,358 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-23 07:55:39,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:55:39 BoogieIcfgContainer [2020-12-23 07:55:39,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:55:39,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:55:39,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:55:39,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:55:39,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:55:38" (1/3) ... [2020-12-23 07:55:39,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@245f01c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:55:39, skipping insertion in model container [2020-12-23 07:55:39,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:55:38" (2/3) ... [2020-12-23 07:55:39,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@245f01c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:55:39, skipping insertion in model container [2020-12-23 07:55:39,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:55:39" (3/3) ... [2020-12-23 07:55:39,378 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_valuebound10.c [2020-12-23 07:55:39,384 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:55:39,388 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-23 07:55:39,407 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-23 07:55:39,433 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:55:39,433 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:55:39,433 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:55:39,433 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:55:39,433 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:55:39,434 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:55:39,434 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:55:39,434 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:55:39,450 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-12-23 07:55:39,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 07:55:39,455 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:39,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:39,456 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 07:55:39,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:39,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-12-23 07:55:39,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:39,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298145561] [2020-12-23 07:55:39,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:39,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:39,618 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 07:55:39,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298145561] [2020-12-23 07:55:39,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:39,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:55:39,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981911550] [2020-12-23 07:55:39,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:55:39,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:39,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:55:39,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:55:39,643 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2020-12-23 07:55:39,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:39,665 INFO L93 Difference]: Finished difference Result 75 states and 102 transitions. [2020-12-23 07:55:39,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:55:39,667 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-23 07:55:39,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:39,676 INFO L225 Difference]: With dead ends: 75 [2020-12-23 07:55:39,676 INFO L226 Difference]: Without dead ends: 35 [2020-12-23 07:55:39,679 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 07:55:39,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-23 07:55:39,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-12-23 07:55:39,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 07:55:39,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-12-23 07:55:39,719 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 7 [2020-12-23 07:55:39,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:39,720 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-12-23 07:55:39,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:55:39,720 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-12-23 07:55:39,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 07:55:39,721 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:39,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:39,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:55:39,722 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 07:55:39,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:39,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-12-23 07:55:39,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:39,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970485605] [2020-12-23 07:55:39,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:39,797 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 07:55:39,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970485605] [2020-12-23 07:55:39,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:39,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:55:39,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696185715] [2020-12-23 07:55:39,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:55:39,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:39,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:55:39,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:55:39,804 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 4 states. [2020-12-23 07:55:39,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:39,887 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2020-12-23 07:55:39,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:55:39,888 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-23 07:55:39,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:39,890 INFO L225 Difference]: With dead ends: 54 [2020-12-23 07:55:39,890 INFO L226 Difference]: Without dead ends: 52 [2020-12-23 07:55:39,891 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 07:55:39,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-23 07:55:39,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2020-12-23 07:55:39,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-23 07:55:39,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-12-23 07:55:39,900 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 7 [2020-12-23 07:55:39,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:39,900 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-12-23 07:55:39,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:55:39,900 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-12-23 07:55:39,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 07:55:39,901 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:39,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:39,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 07:55:39,902 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 07:55:39,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:39,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2020-12-23 07:55:39,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:39,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485201070] [2020-12-23 07:55:39,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:39,983 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 07:55:39,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485201070] [2020-12-23 07:55:39,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:39,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:55:39,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777948394] [2020-12-23 07:55:39,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:55:39,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:39,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:55:39,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:55:39,987 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 4 states. [2020-12-23 07:55:40,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:40,060 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2020-12-23 07:55:40,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:55:40,061 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-23 07:55:40,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:40,062 INFO L225 Difference]: With dead ends: 52 [2020-12-23 07:55:40,062 INFO L226 Difference]: Without dead ends: 50 [2020-12-23 07:55:40,063 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 07:55:40,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-23 07:55:40,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 31. [2020-12-23 07:55:40,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-23 07:55:40,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-12-23 07:55:40,071 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 9 [2020-12-23 07:55:40,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:40,072 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-12-23 07:55:40,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:55:40,072 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-12-23 07:55:40,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:55:40,073 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:40,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:40,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 07:55:40,074 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 07:55:40,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:40,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2020-12-23 07:55:40,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:40,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939908737] [2020-12-23 07:55:40,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:40,091 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:40,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1143661044] [2020-12-23 07:55:40,092 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 07:55:40,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:40,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-23 07:55:40,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:40,243 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 07:55:40,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939908737] [2020-12-23 07:55:40,244 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:40,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143661044] [2020-12-23 07:55:40,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:40,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:55:40,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530287061] [2020-12-23 07:55:40,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:55:40,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:40,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:55:40,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:55:40,250 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 6 states. [2020-12-23 07:55:40,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:40,376 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2020-12-23 07:55:40,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:55:40,377 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-23 07:55:40,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:40,379 INFO L225 Difference]: With dead ends: 72 [2020-12-23 07:55:40,380 INFO L226 Difference]: Without dead ends: 50 [2020-12-23 07:55:40,381 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 07:55:40,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-23 07:55:40,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-12-23 07:55:40,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-23 07:55:40,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-12-23 07:55:40,409 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 11 [2020-12-23 07:55:40,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:40,412 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-12-23 07:55:40,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:55:40,413 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-12-23 07:55:40,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 07:55:40,413 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:40,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:40,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:40,615 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 07:55:40,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:40,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1783857492, now seen corresponding path program 1 times [2020-12-23 07:55:40,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:40,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201438005] [2020-12-23 07:55:40,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:40,631 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:40,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1477060538] [2020-12-23 07:55:40,631 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 07:55:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:40,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:55:40,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:40,744 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 07:55:40,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201438005] [2020-12-23 07:55:40,746 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:40,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477060538] [2020-12-23 07:55:40,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:40,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:55:40,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226715044] [2020-12-23 07:55:40,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:55:40,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:40,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:55:40,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:55:40,750 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 5 states. [2020-12-23 07:55:40,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:40,827 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-12-23 07:55:40,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:55:40,827 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-23 07:55:40,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:40,828 INFO L225 Difference]: With dead ends: 63 [2020-12-23 07:55:40,828 INFO L226 Difference]: Without dead ends: 52 [2020-12-23 07:55:40,829 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 07:55:40,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-23 07:55:40,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-12-23 07:55:40,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 07:55:40,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-12-23 07:55:40,837 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2020-12-23 07:55:40,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:40,837 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-12-23 07:55:40,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:55:40,837 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-12-23 07:55:40,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 07:55:40,838 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:40,838 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:41,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:41,053 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 07:55:41,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:41,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1907209632, now seen corresponding path program 1 times [2020-12-23 07:55:41,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:41,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038385706] [2020-12-23 07:55:41,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:41,069 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:41,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1923730229] [2020-12-23 07:55:41,070 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 07:55:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:41,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 07:55:41,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:41,211 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 07:55:41,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038385706] [2020-12-23 07:55:41,212 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:41,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923730229] [2020-12-23 07:55:41,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:41,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:55:41,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882884804] [2020-12-23 07:55:41,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:55:41,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:41,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:55:41,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:55:41,215 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 7 states. [2020-12-23 07:55:41,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:41,386 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2020-12-23 07:55:41,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:55:41,386 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-23 07:55:41,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:41,387 INFO L225 Difference]: With dead ends: 98 [2020-12-23 07:55:41,387 INFO L226 Difference]: Without dead ends: 61 [2020-12-23 07:55:41,388 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 07:55:41,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-23 07:55:41,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-12-23 07:55:41,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-23 07:55:41,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2020-12-23 07:55:41,397 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 18 [2020-12-23 07:55:41,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:41,398 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2020-12-23 07:55:41,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:55:41,398 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2020-12-23 07:55:41,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 07:55:41,399 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:41,399 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:41,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:41,614 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 07:55:41,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:41,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1115495499, now seen corresponding path program 2 times [2020-12-23 07:55:41,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:41,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487614673] [2020-12-23 07:55:41,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:41,632 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:41,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [413405241] [2020-12-23 07:55:41,637 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 07:55:41,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:55:41,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:41,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-23 07:55:41,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:41,805 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 07:55:41,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487614673] [2020-12-23 07:55:41,806 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:41,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413405241] [2020-12-23 07:55:41,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:41,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:55:41,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857902976] [2020-12-23 07:55:41,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:55:41,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:41,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:55:41,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:55:41,808 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand 8 states. [2020-12-23 07:55:41,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:41,971 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2020-12-23 07:55:41,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:55:41,972 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-12-23 07:55:41,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:41,975 INFO L225 Difference]: With dead ends: 103 [2020-12-23 07:55:41,975 INFO L226 Difference]: Without dead ends: 89 [2020-12-23 07:55:41,975 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 07:55:41,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-23 07:55:41,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2020-12-23 07:55:41,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-23 07:55:41,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-12-23 07:55:41,987 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 25 [2020-12-23 07:55:41,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:41,988 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-12-23 07:55:41,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:55:41,988 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-12-23 07:55:41,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 07:55:41,989 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:41,989 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 07:55:42,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:42,204 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 07:55:42,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:42,205 INFO L82 PathProgramCache]: Analyzing trace with hash 115055918, now seen corresponding path program 1 times [2020-12-23 07:55:42,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:42,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327841790] [2020-12-23 07:55:42,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:42,219 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:42,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1342503994] [2020-12-23 07:55:42,219 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 07:55:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:42,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-23 07:55:42,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:42,411 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 07:55:42,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327841790] [2020-12-23 07:55:42,412 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:42,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342503994] [2020-12-23 07:55:42,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:42,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:55:42,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635624540] [2020-12-23 07:55:42,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:55:42,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:42,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:55:42,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:55:42,414 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 7 states. [2020-12-23 07:55:42,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:42,567 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2020-12-23 07:55:42,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:55:42,568 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-12-23 07:55:42,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:42,569 INFO L225 Difference]: With dead ends: 101 [2020-12-23 07:55:42,569 INFO L226 Difference]: Without dead ends: 99 [2020-12-23 07:55:42,569 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 07:55:42,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-12-23 07:55:42,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 88. [2020-12-23 07:55:42,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-23 07:55:42,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 100 transitions. [2020-12-23 07:55:42,581 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 100 transitions. Word has length 27 [2020-12-23 07:55:42,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:42,581 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 100 transitions. [2020-12-23 07:55:42,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:55:42,581 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 100 transitions. [2020-12-23 07:55:42,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 07:55:42,582 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:42,582 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 07:55:42,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:42,796 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 07:55:42,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:42,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1100255215, now seen corresponding path program 1 times [2020-12-23 07:55:42,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:42,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882628467] [2020-12-23 07:55:42,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:42,816 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:42,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [289575037] [2020-12-23 07:55:42,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 07:55:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:42,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-23 07:55:42,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:43,010 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 07:55:43,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882628467] [2020-12-23 07:55:43,010 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:43,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289575037] [2020-12-23 07:55:43,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:43,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:55:43,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835824849] [2020-12-23 07:55:43,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:55:43,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:43,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:55:43,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:55:43,013 INFO L87 Difference]: Start difference. First operand 88 states and 100 transitions. Second operand 8 states. [2020-12-23 07:55:43,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:43,159 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2020-12-23 07:55:43,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:55:43,160 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-12-23 07:55:43,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:43,161 INFO L225 Difference]: With dead ends: 117 [2020-12-23 07:55:43,161 INFO L226 Difference]: Without dead ends: 91 [2020-12-23 07:55:43,161 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 07:55:43,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-12-23 07:55:43,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2020-12-23 07:55:43,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-23 07:55:43,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2020-12-23 07:55:43,171 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 29 [2020-12-23 07:55:43,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:43,171 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2020-12-23 07:55:43,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:55:43,172 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2020-12-23 07:55:43,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 07:55:43,173 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:43,173 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 07:55:43,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:43,387 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 07:55:43,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:43,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1492250324, now seen corresponding path program 1 times [2020-12-23 07:55:43,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:43,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898748341] [2020-12-23 07:55:43,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:43,403 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:43,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [248293476] [2020-12-23 07:55:43,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 07:55:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:43,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 07:55:43,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:43,592 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 07:55:43,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898748341] [2020-12-23 07:55:43,592 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:43,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248293476] [2020-12-23 07:55:43,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:43,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:55:43,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944068970] [2020-12-23 07:55:43,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:55:43,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:43,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:55:43,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:55:43,594 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand 8 states. [2020-12-23 07:55:43,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:43,765 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2020-12-23 07:55:43,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:55:43,765 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-12-23 07:55:43,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:43,766 INFO L225 Difference]: With dead ends: 91 [2020-12-23 07:55:43,766 INFO L226 Difference]: Without dead ends: 76 [2020-12-23 07:55:43,767 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 07:55:43,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-23 07:55:43,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-12-23 07:55:43,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-23 07:55:43,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2020-12-23 07:55:43,775 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 32 [2020-12-23 07:55:43,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:43,775 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2020-12-23 07:55:43,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:55:43,776 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2020-12-23 07:55:43,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 07:55:43,777 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:43,777 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:43,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 07:55:43,986 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 07:55:43,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:43,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1670816768, now seen corresponding path program 3 times [2020-12-23 07:55:43,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:43,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726108278] [2020-12-23 07:55:43,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:44,007 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:44,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1259704738] [2020-12-23 07:55:44,008 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 07:55:44,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:55:44,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:44,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-23 07:55:44,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:44,235 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 07:55:44,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726108278] [2020-12-23 07:55:44,236 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:44,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259704738] [2020-12-23 07:55:44,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:44,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:55:44,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311749917] [2020-12-23 07:55:44,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:55:44,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:44,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:55:44,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:55:44,238 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand 9 states. [2020-12-23 07:55:44,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:44,448 INFO L93 Difference]: Finished difference Result 94 states and 101 transitions. [2020-12-23 07:55:44,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:55:44,449 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-12-23 07:55:44,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:44,450 INFO L225 Difference]: With dead ends: 94 [2020-12-23 07:55:44,450 INFO L226 Difference]: Without dead ends: 84 [2020-12-23 07:55:44,450 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 07:55:44,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-23 07:55:44,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 74. [2020-12-23 07:55:44,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-23 07:55:44,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2020-12-23 07:55:44,462 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 32 [2020-12-23 07:55:44,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:44,462 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2020-12-23 07:55:44,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:55:44,463 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2020-12-23 07:55:44,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 07:55:44,464 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:44,464 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 07:55:44,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-23 07:55:44,678 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 07:55:44,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:44,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1996519097, now seen corresponding path program 2 times [2020-12-23 07:55:44,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:44,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606901235] [2020-12-23 07:55:44,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:44,690 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:44,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1620979301] [2020-12-23 07:55:44,690 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 07:55:44,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:55:44,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:44,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-23 07:55:44,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:44,908 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 07:55:44,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606901235] [2020-12-23 07:55:44,908 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:44,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620979301] [2020-12-23 07:55:44,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:44,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:55:44,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557032540] [2020-12-23 07:55:44,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:55:44,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:44,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:55:44,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:55:44,911 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand 8 states. [2020-12-23 07:55:45,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:45,186 INFO L93 Difference]: Finished difference Result 133 states and 147 transitions. [2020-12-23 07:55:45,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:55:45,187 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-12-23 07:55:45,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:45,188 INFO L225 Difference]: With dead ends: 133 [2020-12-23 07:55:45,188 INFO L226 Difference]: Without dead ends: 98 [2020-12-23 07:55:45,189 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 07:55:45,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-12-23 07:55:45,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 86. [2020-12-23 07:55:45,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-23 07:55:45,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2020-12-23 07:55:45,200 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 34 [2020-12-23 07:55:45,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:45,201 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2020-12-23 07:55:45,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:55:45,201 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2020-12-23 07:55:45,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-23 07:55:45,202 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:45,202 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 07:55:45,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:45,416 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 07:55:45,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:45,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1415019748, now seen corresponding path program 1 times [2020-12-23 07:55:45,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:45,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568109827] [2020-12-23 07:55:45,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:45,445 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:45,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1370344731] [2020-12-23 07:55:45,445 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 07:55:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:45,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 07:55:45,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:45,640 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 07:55:45,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568109827] [2020-12-23 07:55:45,641 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:45,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370344731] [2020-12-23 07:55:45,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:45,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:55:45,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082694091] [2020-12-23 07:55:45,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:55:45,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:45,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:55:45,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:55:45,643 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand 6 states. [2020-12-23 07:55:45,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:45,750 INFO L93 Difference]: Finished difference Result 146 states and 161 transitions. [2020-12-23 07:55:45,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:55:45,750 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-12-23 07:55:45,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:45,753 INFO L225 Difference]: With dead ends: 146 [2020-12-23 07:55:45,753 INFO L226 Difference]: Without dead ends: 114 [2020-12-23 07:55:45,755 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 07:55:45,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-12-23 07:55:45,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 73. [2020-12-23 07:55:45,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-23 07:55:45,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2020-12-23 07:55:45,769 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 40 [2020-12-23 07:55:45,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:45,771 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 79 transitions. [2020-12-23 07:55:45,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:55:45,771 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 79 transitions. [2020-12-23 07:55:45,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-23 07:55:45,775 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:45,775 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 07:55:45,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:45,989 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 07:55:45,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:45,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1808046758, now seen corresponding path program 3 times [2020-12-23 07:55:45,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:45,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83311687] [2020-12-23 07:55:45,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:46,011 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:46,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [406746717] [2020-12-23 07:55:46,012 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 07:55:46,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 07:55:46,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:46,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 51 conjunts are in the unsatisfiable core [2020-12-23 07:55:46,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:46,360 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 07:55:46,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83311687] [2020-12-23 07:55:46,360 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:46,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406746717] [2020-12-23 07:55:46,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:46,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-23 07:55:46,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478742967] [2020-12-23 07:55:46,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 07:55:46,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:46,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 07:55:46,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:55:46,362 INFO L87 Difference]: Start difference. First operand 73 states and 79 transitions. Second operand 12 states. [2020-12-23 07:55:46,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:46,864 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2020-12-23 07:55:46,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 07:55:46,864 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-12-23 07:55:46,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:46,865 INFO L225 Difference]: With dead ends: 119 [2020-12-23 07:55:46,865 INFO L226 Difference]: Without dead ends: 86 [2020-12-23 07:55:46,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2020-12-23 07:55:46,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-12-23 07:55:46,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 74. [2020-12-23 07:55:46,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-23 07:55:46,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2020-12-23 07:55:46,882 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 40 [2020-12-23 07:55:46,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:46,884 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2020-12-23 07:55:46,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 07:55:46,884 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2020-12-23 07:55:46,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-23 07:55:46,888 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:46,888 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 07:55:47,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 07:55:47,104 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 07:55:47,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:47,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1666655538, now seen corresponding path program 4 times [2020-12-23 07:55:47,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:47,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689822779] [2020-12-23 07:55:47,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:47,115 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:47,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1153524843] [2020-12-23 07:55:47,116 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 07:55:47,171 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 07:55:47,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:47,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 43 conjunts are in the unsatisfiable core [2020-12-23 07:55:47,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:47,340 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 07:55:47,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689822779] [2020-12-23 07:55:47,341 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:47,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153524843] [2020-12-23 07:55:47,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:47,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:55:47,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27280427] [2020-12-23 07:55:47,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:55:47,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:47,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:55:47,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:55:47,342 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand 9 states. [2020-12-23 07:55:47,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:47,659 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2020-12-23 07:55:47,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:55:47,660 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2020-12-23 07:55:47,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:47,661 INFO L225 Difference]: With dead ends: 107 [2020-12-23 07:55:47,661 INFO L226 Difference]: Without dead ends: 105 [2020-12-23 07:55:47,661 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 07:55:47,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-12-23 07:55:47,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 81. [2020-12-23 07:55:47,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-23 07:55:47,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2020-12-23 07:55:47,673 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 41 [2020-12-23 07:55:47,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:47,673 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2020-12-23 07:55:47,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:55:47,673 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2020-12-23 07:55:47,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-23 07:55:47,674 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:47,674 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 07:55:47,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-23 07:55:47,889 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 07:55:47,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:47,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1928663159, now seen corresponding path program 2 times [2020-12-23 07:55:47,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:47,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962827245] [2020-12-23 07:55:47,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:47,900 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:47,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [816141398] [2020-12-23 07:55:47,900 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 07:55:47,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:55:47,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:47,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 50 conjunts are in the unsatisfiable core [2020-12-23 07:55:47,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:48,302 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 07:55:48,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962827245] [2020-12-23 07:55:48,302 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:48,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816141398] [2020-12-23 07:55:48,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:48,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-23 07:55:48,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998445817] [2020-12-23 07:55:48,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 07:55:48,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:48,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 07:55:48,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:55:48,304 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand 13 states. [2020-12-23 07:55:48,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:48,833 INFO L93 Difference]: Finished difference Result 122 states and 135 transitions. [2020-12-23 07:55:48,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:55:48,833 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-12-23 07:55:48,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:48,834 INFO L225 Difference]: With dead ends: 122 [2020-12-23 07:55:48,834 INFO L226 Difference]: Without dead ends: 96 [2020-12-23 07:55:48,835 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 07:55:48,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-12-23 07:55:48,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-12-23 07:55:48,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-12-23 07:55:48,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2020-12-23 07:55:48,849 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 42 [2020-12-23 07:55:48,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:48,849 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2020-12-23 07:55:48,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 07:55:48,849 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2020-12-23 07:55:48,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-23 07:55:48,850 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:48,850 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 07:55:49,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-23 07:55:49,065 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 07:55:49,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:49,066 INFO L82 PathProgramCache]: Analyzing trace with hash 366986673, now seen corresponding path program 3 times [2020-12-23 07:55:49,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:49,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125279927] [2020-12-23 07:55:49,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:49,077 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:49,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1085314332] [2020-12-23 07:55:49,078 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 07:55:49,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:55:49,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:49,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 50 conjunts are in the unsatisfiable core [2020-12-23 07:55:49,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:49,618 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 07:55:49,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125279927] [2020-12-23 07:55:49,618 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:49,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085314332] [2020-12-23 07:55:49,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:49,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-12-23 07:55:49,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464946259] [2020-12-23 07:55:49,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-23 07:55:49,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:49,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-23 07:55:49,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-12-23 07:55:49,624 INFO L87 Difference]: Start difference. First operand 94 states and 101 transitions. Second operand 14 states. [2020-12-23 07:55:50,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:50,188 INFO L93 Difference]: Finished difference Result 114 states and 124 transitions. [2020-12-23 07:55:50,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:55:50,189 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-12-23 07:55:50,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:50,190 INFO L225 Difference]: With dead ends: 114 [2020-12-23 07:55:50,190 INFO L226 Difference]: Without dead ends: 110 [2020-12-23 07:55:50,190 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 07:55:50,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-12-23 07:55:50,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 94. [2020-12-23 07:55:50,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-12-23 07:55:50,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 100 transitions. [2020-12-23 07:55:50,205 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 100 transitions. Word has length 43 [2020-12-23 07:55:50,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:50,205 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 100 transitions. [2020-12-23 07:55:50,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-23 07:55:50,205 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 100 transitions. [2020-12-23 07:55:50,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-23 07:55:50,206 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:50,206 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 07:55:50,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:50,419 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:50,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:50,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1273273436, now seen corresponding path program 2 times [2020-12-23 07:55:50,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:50,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723309896] [2020-12-23 07:55:50,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:50,426 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:50,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1151909276] [2020-12-23 07:55:50,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:50,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 07:55:50,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:50,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-23 07:55:50,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:50,664 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 07:55:50,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723309896] [2020-12-23 07:55:50,664 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:50,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151909276] [2020-12-23 07:55:50,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:50,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:55:50,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791040706] [2020-12-23 07:55:50,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:55:50,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:50,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:55:50,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:55:50,666 INFO L87 Difference]: Start difference. First operand 94 states and 100 transitions. Second operand 11 states. [2020-12-23 07:55:51,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:51,013 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2020-12-23 07:55:51,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:55:51,013 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-12-23 07:55:51,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:51,013 INFO L225 Difference]: With dead ends: 94 [2020-12-23 07:55:51,013 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 07:55:51,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-12-23 07:55:51,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 07:55:51,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 07:55:51,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 07:55:51,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 07:55:51,015 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2020-12-23 07:55:51,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:51,015 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 07:55:51,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:55:51,015 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 07:55:51,015 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 07:55:51,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-23 07:55:51,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-23 07:55:53,681 WARN L197 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 55 DAG size of output: 29 [2020-12-23 07:55:53,899 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 30 [2020-12-23 07:55:54,096 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 18 [2020-12-23 07:55:54,328 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2020-12-23 07:55:54,544 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2020-12-23 07:55:54,679 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 12 [2020-12-23 07:55:54,949 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 18 [2020-12-23 07:55:54,953 INFO L192 CegarLoopUtils]: At program point L60(lines 22 61) the Hoare annotation is: true [2020-12-23 07:55:54,953 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-23 07:55:54,954 INFO L189 CegarLoopUtils]: For program point L52(lines 52 55) no Hoare annotation was computed. [2020-12-23 07:55:54,954 INFO L189 CegarLoopUtils]: For program point L52-2(lines 22 61) no Hoare annotation was computed. [2020-12-23 07:55:54,954 INFO L189 CegarLoopUtils]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-12-23 07:55:54,954 INFO L189 CegarLoopUtils]: For program point L44-1(lines 44 56) no Hoare annotation was computed. [2020-12-23 07:55:54,954 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-23 07:55:54,954 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-23 07:55:54,954 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-23 07:55:54,954 INFO L189 CegarLoopUtils]: For program point L12(line 12) no Hoare annotation was computed. [2020-12-23 07:55:54,954 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-23 07:55:54,955 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-23 07:55:54,955 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-23 07:55:54,955 INFO L189 CegarLoopUtils]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-12-23 07:55:54,955 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 07:55:54,955 INFO L189 CegarLoopUtils]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2020-12-23 07:55:54,956 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 07:55:54,956 INFO L189 CegarLoopUtils]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2020-12-23 07:55:54,956 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 07:55:54,956 INFO L189 CegarLoopUtils]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2020-12-23 07:55:54,956 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 07:55:54,956 INFO L189 CegarLoopUtils]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2020-12-23 07:55:54,956 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 07:55:54,956 INFO L189 CegarLoopUtils]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2020-12-23 07:55:54,956 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-23 07:55:54,956 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 07:55:54,956 INFO L189 CegarLoopUtils]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2020-12-23 07:55:54,957 INFO L192 CegarLoopUtils]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2020-12-23 07:55:54,957 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-23 07:55:54,957 INFO L189 CegarLoopUtils]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-12-23 07:55:54,957 INFO L189 CegarLoopUtils]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-12-23 07:55:54,957 INFO L189 CegarLoopUtils]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2020-12-23 07:55:54,957 INFO L189 CegarLoopUtils]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2020-12-23 07:55:54,957 INFO L189 CegarLoopUtils]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2020-12-23 07:55:54,957 INFO L189 CegarLoopUtils]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2020-12-23 07:55:54,957 INFO L189 CegarLoopUtils]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2020-12-23 07:55:54,957 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-23 07:55:54,957 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 07:55:54,958 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-23 07:55:54,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:55:54 BoogieIcfgContainer [2020-12-23 07:55:54,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:55:54,986 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:55:54,986 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:55:54,986 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:55:54,987 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:55:39" (3/4) ... [2020-12-23 07:55:54,990 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 07:55:55,003 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-12-23 07:55:55,004 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 07:55:55,004 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 07:55:55,004 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 07:55:55,061 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/hard2_valuebound10.c-witness.graphml [2020-12-23 07:55:55,062 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:55:55,063 INFO L168 Benchmark]: Toolchain (without parser) took 16726.40 ms. Allocated memory was 178.3 MB in the beginning and 256.9 MB in the end (delta: 78.6 MB). Free memory was 156.7 MB in the beginning and 92.0 MB in the end (delta: 64.6 MB). Peak memory consumption was 143.3 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:55,063 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 178.3 MB. Free memory is still 149.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:55:55,063 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.07 ms. Allocated memory is still 178.3 MB. Free memory was 156.5 MB in the beginning and 146.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:55,064 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.04 ms. Allocated memory is still 178.3 MB. Free memory was 146.5 MB in the beginning and 145.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:55:55,064 INFO L168 Benchmark]: Boogie Preprocessor took 68.98 ms. Allocated memory is still 178.3 MB. Free memory was 145.1 MB in the beginning and 161.6 MB in the end (delta: -16.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:55,065 INFO L168 Benchmark]: RCFGBuilder took 562.96 ms. Allocated memory is still 178.3 MB. Free memory was 161.6 MB in the beginning and 145.5 MB in the end (delta: 16.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:55,065 INFO L168 Benchmark]: TraceAbstraction took 15616.63 ms. Allocated memory was 178.3 MB in the beginning and 256.9 MB in the end (delta: 78.6 MB). Free memory was 145.1 MB in the beginning and 95.2 MB in the end (delta: 49.9 MB). Peak memory consumption was 137.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:55,066 INFO L168 Benchmark]: Witness Printer took 75.76 ms. Allocated memory is still 256.9 MB. Free memory was 95.2 MB in the beginning and 92.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:55,068 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 178.3 MB. Free memory is still 149.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 351.07 ms. Allocated memory is still 178.3 MB. Free memory was 156.5 MB in the beginning and 146.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 40.04 ms. Allocated memory is still 178.3 MB. Free memory was 146.5 MB in the beginning and 145.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Preprocessor took 68.98 ms. Allocated memory is still 178.3 MB. Free memory was 145.1 MB in the beginning and 161.6 MB in the end (delta: -16.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 562.96 ms. Allocated memory is still 178.3 MB. Free memory was 161.6 MB in the beginning and 145.5 MB in the end (delta: 16.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 15616.63 ms. Allocated memory was 178.3 MB in the beginning and 256.9 MB in the end (delta: 78.6 MB). Free memory was 145.1 MB in the beginning and 95.2 MB in the end (delta: 49.9 MB). Peak memory consumption was 137.1 MB. Max. memory is 8.0 GB. * Witness Printer took 75.76 ms. Allocated memory is still 256.9 MB. Free memory was 95.2 MB in the beginning and 92.0 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: 11.7s, OverallIterations: 18, TraceHistogramMax: 4, AutomataDifference: 4.1s, 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, 1.9s 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, 2.7s 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...