/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/uthash-2.0.2/uthash_FNV_test10-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 18:07:47,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 18:07:47,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 18:07:47,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 18:07:47,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 18:07:47,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 18:07:47,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 18:07:47,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 18:07:47,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 18:07:47,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 18:07:47,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 18:07:47,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 18:07:47,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 18:07:47,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 18:07:47,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 18:07:47,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 18:07:47,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 18:07:47,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 18:07:47,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 18:07:47,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 18:07:47,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 18:07:47,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 18:07:47,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 18:07:47,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 18:07:47,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 18:07:47,285 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 18:07:47,286 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 18:07:47,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 18:07:47,288 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 18:07:47,289 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 18:07:47,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 18:07:47,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 18:07:47,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 18:07:47,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 18:07:47,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 18:07:47,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 18:07:47,296 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 18:07:47,354 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 18:07:47,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 18:07:47,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 18:07:47,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 18:07:47,358 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 18:07:47,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 18:07:47,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 18:07:47,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 18:07:47,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 18:07:47,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 18:07:47,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 18:07:47,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 18:07:47,362 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 18:07:47,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 18:07:47,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 18:07:47,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 18:07:47,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 18:07:47,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 18:07:47,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 18:07:47,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 18:07:47,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 18:07:47,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 18:07:47,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 18:07:47,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 18:07:47,365 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 18:07:47,365 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 18:07:47,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 18:07:47,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 18:07:47,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 18:07:47,837 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 18:07:47,838 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 18:07:47,839 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i [2020-12-22 18:07:47,926 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/319833707/f38ef05ddda949b49bacf6e7db13be14/FLAG8dd750abf [2020-12-22 18:07:48,799 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 18:07:48,800 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i [2020-12-22 18:07:48,828 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/319833707/f38ef05ddda949b49bacf6e7db13be14/FLAG8dd750abf [2020-12-22 18:07:48,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/319833707/f38ef05ddda949b49bacf6e7db13be14 [2020-12-22 18:07:48,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 18:07:48,912 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 18:07:48,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 18:07:48,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 18:07:48,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 18:07:48,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:07:48" (1/1) ... [2020-12-22 18:07:48,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42de12c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:07:48, skipping insertion in model container [2020-12-22 18:07:48,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:07:48" (1/1) ... [2020-12-22 18:07:48,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 18:07:49,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 18:07:49,666 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i[33022,33035] [2020-12-22 18:07:49,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 18:07:49,940 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 18:07:50,009 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i[33022,33035] [2020-12-22 18:07:50,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 18:07:50,376 INFO L208 MainTranslator]: Completed translation [2020-12-22 18:07:50,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:07:50 WrapperNode [2020-12-22 18:07:50,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 18:07:50,378 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 18:07:50,378 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 18:07:50,378 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 18:07:50,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:07:50" (1/1) ... [2020-12-22 18:07:50,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:07:50" (1/1) ... [2020-12-22 18:07:50,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 18:07:50,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 18:07:50,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 18:07:50,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 18:07:50,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:07:50" (1/1) ... [2020-12-22 18:07:50,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:07:50" (1/1) ... [2020-12-22 18:07:50,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:07:50" (1/1) ... [2020-12-22 18:07:50,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:07:50" (1/1) ... [2020-12-22 18:07:50,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:07:50" (1/1) ... [2020-12-22 18:07:50,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:07:50" (1/1) ... [2020-12-22 18:07:50,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:07:50" (1/1) ... [2020-12-22 18:07:50,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 18:07:50,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 18:07:50,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 18:07:50,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 18:07:50,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:07:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 18:07:50,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 18:07:50,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 18:07:50,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 18:07:50,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 18:07:50,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 18:07:50,891 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-12-22 18:07:50,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 18:07:50,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 18:07:50,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 18:07:50,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 18:07:50,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 18:07:53,437 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 18:07:53,437 INFO L299 CfgBuilder]: Removed 207 assume(true) statements. [2020-12-22 18:07:53,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:07:53 BoogieIcfgContainer [2020-12-22 18:07:53,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 18:07:53,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 18:07:53,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 18:07:53,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 18:07:53,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:07:48" (1/3) ... [2020-12-22 18:07:53,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ad3c64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:07:53, skipping insertion in model container [2020-12-22 18:07:53,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:07:50" (2/3) ... [2020-12-22 18:07:53,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ad3c64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:07:53, skipping insertion in model container [2020-12-22 18:07:53,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:07:53" (3/3) ... [2020-12-22 18:07:53,450 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test10-1.i [2020-12-22 18:07:53,457 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 18:07:53,465 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-12-22 18:07:53,482 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-12-22 18:07:53,519 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 18:07:53,519 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 18:07:53,519 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 18:07:53,519 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 18:07:53,520 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 18:07:53,520 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 18:07:53,520 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 18:07:53,520 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 18:07:53,550 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states. [2020-12-22 18:07:53,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 18:07:53,557 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:07:53,558 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:07:53,559 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:07:53,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:07:53,566 INFO L82 PathProgramCache]: Analyzing trace with hash -128377380, now seen corresponding path program 1 times [2020-12-22 18:07:53,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:07:53,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181533887] [2020-12-22 18:07:53,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:07:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:07:53,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:07:53,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181533887] [2020-12-22 18:07:53,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:07:53,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 18:07:53,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21320017] [2020-12-22 18:07:53,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 18:07:53,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:07:53,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 18:07:53,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 18:07:53,799 INFO L87 Difference]: Start difference. First operand 470 states. Second operand 2 states. [2020-12-22 18:07:53,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:07:53,911 INFO L93 Difference]: Finished difference Result 938 states and 1580 transitions. [2020-12-22 18:07:53,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 18:07:53,912 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-12-22 18:07:53,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:07:53,932 INFO L225 Difference]: With dead ends: 938 [2020-12-22 18:07:53,932 INFO L226 Difference]: Without dead ends: 465 [2020-12-22 18:07:53,939 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 [2020-12-22 18:07:53,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2020-12-22 18:07:54,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2020-12-22 18:07:54,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-12-22 18:07:54,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 608 transitions. [2020-12-22 18:07:54,031 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 608 transitions. Word has length 9 [2020-12-22 18:07:54,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:07:54,032 INFO L481 AbstractCegarLoop]: Abstraction has 465 states and 608 transitions. [2020-12-22 18:07:54,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 18:07:54,033 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 608 transitions. [2020-12-22 18:07:54,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 18:07:54,038 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:07:54,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:07:54,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 18:07:54,042 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:07:54,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:07:54,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1568739198, now seen corresponding path program 1 times [2020-12-22 18:07:54,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:07:54,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253153538] [2020-12-22 18:07:54,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:07:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:07:54,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:07:54,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253153538] [2020-12-22 18:07:54,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:07:54,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:07:54,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402673050] [2020-12-22 18:07:54,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:07:54,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:07:54,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:07:54,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:07:54,246 INFO L87 Difference]: Start difference. First operand 465 states and 608 transitions. Second operand 4 states. [2020-12-22 18:07:55,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:07:55,029 INFO L93 Difference]: Finished difference Result 831 states and 1087 transitions. [2020-12-22 18:07:55,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:07:55,030 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-12-22 18:07:55,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:07:55,037 INFO L225 Difference]: With dead ends: 831 [2020-12-22 18:07:55,038 INFO L226 Difference]: Without dead ends: 540 [2020-12-22 18:07:55,041 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 [2020-12-22 18:07:55,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2020-12-22 18:07:55,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 467. [2020-12-22 18:07:55,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-12-22 18:07:55,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 610 transitions. [2020-12-22 18:07:55,081 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 610 transitions. Word has length 44 [2020-12-22 18:07:55,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:07:55,082 INFO L481 AbstractCegarLoop]: Abstraction has 467 states and 610 transitions. [2020-12-22 18:07:55,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:07:55,082 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 610 transitions. [2020-12-22 18:07:55,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 18:07:55,089 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:07:55,090 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:07:55,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 18:07:55,091 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:07:55,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:07:55,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1325558428, now seen corresponding path program 1 times [2020-12-22 18:07:55,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:07:55,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240322860] [2020-12-22 18:07:55,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:07:55,154 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:07:55,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2041548340] [2020-12-22 18:07:55,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 18:07:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:07:55,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:07:55,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:07:55,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:07:55,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240322860] [2020-12-22 18:07:55,605 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:07:55,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041548340] [2020-12-22 18:07:55,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:07:55,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:07:55,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136575655] [2020-12-22 18:07:55,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:07:55,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:07:55,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:07:55,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:07:55,608 INFO L87 Difference]: Start difference. First operand 467 states and 610 transitions. Second operand 3 states. [2020-12-22 18:07:55,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:07:55,703 INFO L93 Difference]: Finished difference Result 951 states and 1247 transitions. [2020-12-22 18:07:55,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:07:55,703 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-22 18:07:55,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:07:55,706 INFO L225 Difference]: With dead ends: 951 [2020-12-22 18:07:55,707 INFO L226 Difference]: Without dead ends: 488 [2020-12-22 18:07:55,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:07:55,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-12-22 18:07:55,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 487. [2020-12-22 18:07:55,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2020-12-22 18:07:55,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 630 transitions. [2020-12-22 18:07:55,723 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 630 transitions. Word has length 97 [2020-12-22 18:07:55,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:07:55,723 INFO L481 AbstractCegarLoop]: Abstraction has 487 states and 630 transitions. [2020-12-22 18:07:55,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:07:55,724 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 630 transitions. [2020-12-22 18:07:55,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 18:07:55,728 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:07:55,728 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:07:55,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 18:07:55,944 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:07:55,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:07:55,945 INFO L82 PathProgramCache]: Analyzing trace with hash 948433376, now seen corresponding path program 1 times [2020-12-22 18:07:55,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:07:55,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801319676] [2020-12-22 18:07:55,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:07:55,973 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:07:55,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [884141854] [2020-12-22 18:07:55,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 18:07:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:07:56,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:07:56,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:07:56,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 18:07:56,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801319676] [2020-12-22 18:07:56,527 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:07:56,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884141854] [2020-12-22 18:07:56,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:07:56,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:07:56,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384770644] [2020-12-22 18:07:56,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:07:56,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:07:56,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:07:56,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:07:56,531 INFO L87 Difference]: Start difference. First operand 487 states and 630 transitions. Second operand 3 states. [2020-12-22 18:07:56,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:07:56,651 INFO L93 Difference]: Finished difference Result 787 states and 1024 transitions. [2020-12-22 18:07:56,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:07:56,652 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-22 18:07:56,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:07:56,657 INFO L225 Difference]: With dead ends: 787 [2020-12-22 18:07:56,657 INFO L226 Difference]: Without dead ends: 508 [2020-12-22 18:07:56,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:07:56,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-12-22 18:07:56,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 507. [2020-12-22 18:07:56,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-12-22 18:07:56,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 650 transitions. [2020-12-22 18:07:56,676 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 650 transitions. Word has length 97 [2020-12-22 18:07:56,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:07:56,676 INFO L481 AbstractCegarLoop]: Abstraction has 507 states and 650 transitions. [2020-12-22 18:07:56,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:07:56,677 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 650 transitions. [2020-12-22 18:07:56,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 18:07:56,679 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:07:56,679 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:07:56,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:07:56,893 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:07:56,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:07:56,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1352389214, now seen corresponding path program 1 times [2020-12-22 18:07:56,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:07:56,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859165362] [2020-12-22 18:07:56,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:07:56,917 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:07:56,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [216385111] [2020-12-22 18:07:56,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 18:07:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:07:57,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:07:57,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:07:57,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:07:57,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859165362] [2020-12-22 18:07:57,393 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:07:57,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216385111] [2020-12-22 18:07:57,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:07:57,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:07:57,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236899270] [2020-12-22 18:07:57,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:07:57,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:07:57,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:07:57,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:07:57,396 INFO L87 Difference]: Start difference. First operand 507 states and 650 transitions. Second operand 4 states. [2020-12-22 18:07:57,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:07:57,510 INFO L93 Difference]: Finished difference Result 1086 states and 1400 transitions. [2020-12-22 18:07:57,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:07:57,510 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-12-22 18:07:57,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:07:57,514 INFO L225 Difference]: With dead ends: 1086 [2020-12-22 18:07:57,514 INFO L226 Difference]: Without dead ends: 583 [2020-12-22 18:07:57,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:07:57,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2020-12-22 18:07:57,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 493. [2020-12-22 18:07:57,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-12-22 18:07:57,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 629 transitions. [2020-12-22 18:07:57,530 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 629 transitions. Word has length 97 [2020-12-22 18:07:57,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:07:57,531 INFO L481 AbstractCegarLoop]: Abstraction has 493 states and 629 transitions. [2020-12-22 18:07:57,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:07:57,531 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 629 transitions. [2020-12-22 18:07:57,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 18:07:57,532 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:07:57,533 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:07:57,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:07:57,748 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:07:57,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:07:57,748 INFO L82 PathProgramCache]: Analyzing trace with hash 881478960, now seen corresponding path program 1 times [2020-12-22 18:07:57,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:07:57,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249028493] [2020-12-22 18:07:57,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:07:57,770 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:07:57,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [790895761] [2020-12-22 18:07:57,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 18:07:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:07:58,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:07:58,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:07:58,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 18:07:58,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249028493] [2020-12-22 18:07:58,138 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:07:58,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790895761] [2020-12-22 18:07:58,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:07:58,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:07:58,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069535758] [2020-12-22 18:07:58,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:07:58,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:07:58,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:07:58,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:07:58,140 INFO L87 Difference]: Start difference. First operand 493 states and 629 transitions. Second operand 4 states. [2020-12-22 18:07:58,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:07:58,254 INFO L93 Difference]: Finished difference Result 761 states and 972 transitions. [2020-12-22 18:07:58,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:07:58,254 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-12-22 18:07:58,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:07:58,257 INFO L225 Difference]: With dead ends: 761 [2020-12-22 18:07:58,258 INFO L226 Difference]: Without dead ends: 480 [2020-12-22 18:07:58,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:07:58,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2020-12-22 18:07:58,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 479. [2020-12-22 18:07:58,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-12-22 18:07:58,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 608 transitions. [2020-12-22 18:07:58,291 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 608 transitions. Word has length 97 [2020-12-22 18:07:58,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:07:58,292 INFO L481 AbstractCegarLoop]: Abstraction has 479 states and 608 transitions. [2020-12-22 18:07:58,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:07:58,292 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 608 transitions. [2020-12-22 18:07:58,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 18:07:58,293 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:07:58,293 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:07:58,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:07:58,510 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:07:58,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:07:58,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1427704734, now seen corresponding path program 1 times [2020-12-22 18:07:58,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:07:58,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376610473] [2020-12-22 18:07:58,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:07:58,533 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:07:58,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [481083888] [2020-12-22 18:07:58,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 18:07:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:07:58,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 18:07:58,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:07:58,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:07:58,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376610473] [2020-12-22 18:07:58,935 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:07:58,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481083888] [2020-12-22 18:07:58,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:07:58,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:07:58,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624875971] [2020-12-22 18:07:58,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:07:58,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:07:58,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:07:58,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:07:58,938 INFO L87 Difference]: Start difference. First operand 479 states and 608 transitions. Second operand 3 states. [2020-12-22 18:07:59,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:07:59,057 INFO L93 Difference]: Finished difference Result 1231 states and 1562 transitions. [2020-12-22 18:07:59,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:07:59,058 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-22 18:07:59,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:07:59,062 INFO L225 Difference]: With dead ends: 1231 [2020-12-22 18:07:59,062 INFO L226 Difference]: Without dead ends: 756 [2020-12-22 18:07:59,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:07:59,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2020-12-22 18:07:59,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 721. [2020-12-22 18:07:59,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2020-12-22 18:07:59,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 930 transitions. [2020-12-22 18:07:59,089 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 930 transitions. Word has length 97 [2020-12-22 18:07:59,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:07:59,089 INFO L481 AbstractCegarLoop]: Abstraction has 721 states and 930 transitions. [2020-12-22 18:07:59,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:07:59,089 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 930 transitions. [2020-12-22 18:07:59,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-22 18:07:59,091 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:07:59,091 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:07:59,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 18:07:59,305 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:07:59,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:07:59,306 INFO L82 PathProgramCache]: Analyzing trace with hash -371205377, now seen corresponding path program 1 times [2020-12-22 18:07:59,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:07:59,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50854628] [2020-12-22 18:07:59,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:07:59,327 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:07:59,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [568180386] [2020-12-22 18:07:59,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 18:07:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:07:59,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:07:59,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:07:59,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:07:59,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50854628] [2020-12-22 18:07:59,759 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:07:59,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568180386] [2020-12-22 18:07:59,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:07:59,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:07:59,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752443373] [2020-12-22 18:07:59,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:07:59,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:07:59,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:07:59,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:07:59,762 INFO L87 Difference]: Start difference. First operand 721 states and 930 transitions. Second operand 3 states. [2020-12-22 18:07:59,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:07:59,825 INFO L93 Difference]: Finished difference Result 1400 states and 1809 transitions. [2020-12-22 18:07:59,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:07:59,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2020-12-22 18:07:59,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:07:59,830 INFO L225 Difference]: With dead ends: 1400 [2020-12-22 18:07:59,831 INFO L226 Difference]: Without dead ends: 727 [2020-12-22 18:07:59,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:07:59,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2020-12-22 18:07:59,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2020-12-22 18:07:59,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-12-22 18:07:59,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 936 transitions. [2020-12-22 18:07:59,854 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 936 transitions. Word has length 104 [2020-12-22 18:07:59,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:07:59,855 INFO L481 AbstractCegarLoop]: Abstraction has 727 states and 936 transitions. [2020-12-22 18:07:59,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:07:59,855 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 936 transitions. [2020-12-22 18:07:59,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 18:07:59,857 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:07:59,857 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:08:00,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:08:00,072 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:08:00,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:08:00,073 INFO L82 PathProgramCache]: Analyzing trace with hash -2085853600, now seen corresponding path program 1 times [2020-12-22 18:08:00,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:08:00,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411682818] [2020-12-22 18:08:00,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:08:00,091 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:08:00,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903820416] [2020-12-22 18:08:00,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 18:08:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:08:00,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 18:08:00,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:08:00,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 18:08:00,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411682818] [2020-12-22 18:08:00,516 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:08:00,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903820416] [2020-12-22 18:08:00,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:08:00,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-22 18:08:00,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847500405] [2020-12-22 18:08:00,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:08:00,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:08:00,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:08:00,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:08:00,519 INFO L87 Difference]: Start difference. First operand 727 states and 936 transitions. Second operand 4 states. [2020-12-22 18:08:00,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:08:00,605 INFO L93 Difference]: Finished difference Result 1411 states and 1820 transitions. [2020-12-22 18:08:00,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:08:00,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2020-12-22 18:08:00,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:08:00,610 INFO L225 Difference]: With dead ends: 1411 [2020-12-22 18:08:00,610 INFO L226 Difference]: Without dead ends: 733 [2020-12-22 18:08:00,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:08:00,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2020-12-22 18:08:00,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 733. [2020-12-22 18:08:00,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-12-22 18:08:00,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 942 transitions. [2020-12-22 18:08:00,632 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 942 transitions. Word has length 106 [2020-12-22 18:08:00,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:08:00,632 INFO L481 AbstractCegarLoop]: Abstraction has 733 states and 942 transitions. [2020-12-22 18:08:00,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:08:00,632 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 942 transitions. [2020-12-22 18:08:00,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 18:08:00,634 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:08:00,634 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:08:00,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:08:00,849 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:08:00,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:08:00,850 INFO L82 PathProgramCache]: Analyzing trace with hash -462744993, now seen corresponding path program 2 times [2020-12-22 18:08:00,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:08:00,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048011806] [2020-12-22 18:08:00,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:08:00,891 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:08:00,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [6126267] [2020-12-22 18:08:00,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 18:08:01,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:08:01,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:08:01,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 18:08:01,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:08:01,426 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 18:08:01,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048011806] [2020-12-22 18:08:01,427 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:08:01,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6126267] [2020-12-22 18:08:01,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:08:01,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 18:08:01,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788223729] [2020-12-22 18:08:01,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 18:08:01,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:08:01,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 18:08:01,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:08:01,429 INFO L87 Difference]: Start difference. First operand 733 states and 942 transitions. Second operand 5 states. [2020-12-22 18:08:01,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:08:01,548 INFO L93 Difference]: Finished difference Result 1422 states and 1831 transitions. [2020-12-22 18:08:01,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 18:08:01,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-12-22 18:08:01,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:08:01,552 INFO L225 Difference]: With dead ends: 1422 [2020-12-22 18:08:01,553 INFO L226 Difference]: Without dead ends: 739 [2020-12-22 18:08:01,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:08:01,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-12-22 18:08:01,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 739. [2020-12-22 18:08:01,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-12-22 18:08:01,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 948 transitions. [2020-12-22 18:08:01,576 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 948 transitions. Word has length 108 [2020-12-22 18:08:01,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:08:01,577 INFO L481 AbstractCegarLoop]: Abstraction has 739 states and 948 transitions. [2020-12-22 18:08:01,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 18:08:01,577 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 948 transitions. [2020-12-22 18:08:01,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 18:08:01,578 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:08:01,579 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:08:01,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 18:08:01,793 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:08:01,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:08:01,794 INFO L82 PathProgramCache]: Analyzing trace with hash 87417216, now seen corresponding path program 3 times [2020-12-22 18:08:01,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:08:01,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005488670] [2020-12-22 18:08:01,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:08:01,813 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:08:01,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2015509560] [2020-12-22 18:08:01,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 18:08:02,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 18:08:02,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:08:02,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 18:08:02,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:08:02,204 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 18:08:02,205 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:08:02,211 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:08:02,212 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:08:02,212 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-12-22 18:08:02,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 18:08:02,273 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-22 18:08:02,275 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:08:02,280 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:08:02,282 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:08:02,282 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:71, output treesize:3 [2020-12-22 18:08:02,392 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 18:08:02,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005488670] [2020-12-22 18:08:02,393 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:08:02,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015509560] [2020-12-22 18:08:02,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:08:02,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 18:08:02,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90764075] [2020-12-22 18:08:02,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 18:08:02,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:08:02,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 18:08:02,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:08:02,395 INFO L87 Difference]: Start difference. First operand 739 states and 948 transitions. Second operand 5 states. [2020-12-22 18:08:03,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:08:03,543 INFO L93 Difference]: Finished difference Result 1382 states and 1772 transitions. [2020-12-22 18:08:03,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 18:08:03,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-12-22 18:08:03,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:08:03,549 INFO L225 Difference]: With dead ends: 1382 [2020-12-22 18:08:03,549 INFO L226 Difference]: Without dead ends: 739 [2020-12-22 18:08:03,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 18:08:03,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-12-22 18:08:03,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 739. [2020-12-22 18:08:03,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-12-22 18:08:03,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 947 transitions. [2020-12-22 18:08:03,573 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 947 transitions. Word has length 110 [2020-12-22 18:08:03,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:08:03,574 INFO L481 AbstractCegarLoop]: Abstraction has 739 states and 947 transitions. [2020-12-22 18:08:03,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 18:08:03,574 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 947 transitions. [2020-12-22 18:08:03,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 18:08:03,576 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:08:03,577 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:08:03,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:08:03,792 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:08:03,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:08:03,793 INFO L82 PathProgramCache]: Analyzing trace with hash -2117457625, now seen corresponding path program 1 times [2020-12-22 18:08:03,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:08:03,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160766798] [2020-12-22 18:08:03,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:08:03,820 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:08:03,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [658042756] [2020-12-22 18:08:03,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 18:08:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:08:04,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:08:04,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:08:04,364 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 18:08:04,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160766798] [2020-12-22 18:08:04,365 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:08:04,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658042756] [2020-12-22 18:08:04,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:08:04,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:08:04,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182632733] [2020-12-22 18:08:04,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:08:04,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:08:04,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:08:04,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:08:04,367 INFO L87 Difference]: Start difference. First operand 739 states and 947 transitions. Second operand 3 states. [2020-12-22 18:08:04,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:08:04,480 INFO L93 Difference]: Finished difference Result 1502 states and 1935 transitions. [2020-12-22 18:08:04,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:08:04,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2020-12-22 18:08:04,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:08:04,485 INFO L225 Difference]: With dead ends: 1502 [2020-12-22 18:08:04,485 INFO L226 Difference]: Without dead ends: 781 [2020-12-22 18:08:04,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:08:04,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-12-22 18:08:04,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 779. [2020-12-22 18:08:04,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 779 states. [2020-12-22 18:08:04,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 987 transitions. [2020-12-22 18:08:04,513 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 987 transitions. Word has length 157 [2020-12-22 18:08:04,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:08:04,513 INFO L481 AbstractCegarLoop]: Abstraction has 779 states and 987 transitions. [2020-12-22 18:08:04,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:08:04,513 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 987 transitions. [2020-12-22 18:08:04,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 18:08:04,515 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:08:04,515 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:08:04,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:08:04,729 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:08:04,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:08:04,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1572585051, now seen corresponding path program 1 times [2020-12-22 18:08:04,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:08:04,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023479386] [2020-12-22 18:08:04,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:08:04,748 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:08:04,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [737627708] [2020-12-22 18:08:04,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 18:08:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:08:05,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:08:05,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:08:05,239 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 18:08:05,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023479386] [2020-12-22 18:08:05,240 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:08:05,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737627708] [2020-12-22 18:08:05,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:08:05,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:08:05,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413030197] [2020-12-22 18:08:05,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:08:05,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:08:05,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:08:05,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:08:05,243 INFO L87 Difference]: Start difference. First operand 779 states and 987 transitions. Second operand 4 states. [2020-12-22 18:08:05,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:08:05,349 INFO L93 Difference]: Finished difference Result 1496 states and 1900 transitions. [2020-12-22 18:08:05,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:08:05,349 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2020-12-22 18:08:05,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:08:05,353 INFO L225 Difference]: With dead ends: 1496 [2020-12-22 18:08:05,354 INFO L226 Difference]: Without dead ends: 753 [2020-12-22 18:08:05,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:08:05,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2020-12-22 18:08:05,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 751. [2020-12-22 18:08:05,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2020-12-22 18:08:05,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 945 transitions. [2020-12-22 18:08:05,379 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 945 transitions. Word has length 157 [2020-12-22 18:08:05,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:08:05,380 INFO L481 AbstractCegarLoop]: Abstraction has 751 states and 945 transitions. [2020-12-22 18:08:05,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:08:05,380 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 945 transitions. [2020-12-22 18:08:05,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 18:08:05,382 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:08:05,382 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:08:05,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 18:08:05,597 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:08:05,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:08:05,598 INFO L82 PathProgramCache]: Analyzing trace with hash 94293941, now seen corresponding path program 1 times [2020-12-22 18:08:05,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:08:05,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138907664] [2020-12-22 18:08:05,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:08:05,622 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:08:05,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [966033624] [2020-12-22 18:08:05,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 18:08:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:08:06,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 18:08:06,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:08:06,146 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 18:08:06,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138907664] [2020-12-22 18:08:06,146 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:08:06,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966033624] [2020-12-22 18:08:06,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:08:06,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 18:08:06,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013316123] [2020-12-22 18:08:06,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 18:08:06,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:08:06,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 18:08:06,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:08:06,149 INFO L87 Difference]: Start difference. First operand 751 states and 945 transitions. Second operand 5 states. [2020-12-22 18:08:06,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:08:06,330 INFO L93 Difference]: Finished difference Result 2209 states and 2786 transitions. [2020-12-22 18:08:06,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 18:08:06,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-12-22 18:08:06,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:08:06,338 INFO L225 Difference]: With dead ends: 2209 [2020-12-22 18:08:06,338 INFO L226 Difference]: Without dead ends: 1496 [2020-12-22 18:08:06,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:08:06,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2020-12-22 18:08:06,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 797. [2020-12-22 18:08:06,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2020-12-22 18:08:06,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 995 transitions. [2020-12-22 18:08:06,372 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 995 transitions. Word has length 157 [2020-12-22 18:08:06,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:08:06,372 INFO L481 AbstractCegarLoop]: Abstraction has 797 states and 995 transitions. [2020-12-22 18:08:06,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 18:08:06,372 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 995 transitions. [2020-12-22 18:08:06,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 18:08:06,375 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:08:06,375 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:08:06,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 18:08:06,591 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:08:06,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:08:06,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1994860229, now seen corresponding path program 1 times [2020-12-22 18:08:06,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:08:06,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980046934] [2020-12-22 18:08:06,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:08:06,610 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:08:06,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [326419413] [2020-12-22 18:08:06,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 18:08:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:08:07,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 18:08:07,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:08:07,161 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 18:08:07,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980046934] [2020-12-22 18:08:07,161 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:08:07,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326419413] [2020-12-22 18:08:07,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:08:07,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:08:07,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179133051] [2020-12-22 18:08:07,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:08:07,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:08:07,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:08:07,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:08:07,163 INFO L87 Difference]: Start difference. First operand 797 states and 995 transitions. Second operand 4 states. [2020-12-22 18:08:07,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:08:07,270 INFO L93 Difference]: Finished difference Result 1503 states and 1887 transitions. [2020-12-22 18:08:07,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:08:07,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2020-12-22 18:08:07,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:08:07,275 INFO L225 Difference]: With dead ends: 1503 [2020-12-22 18:08:07,275 INFO L226 Difference]: Without dead ends: 733 [2020-12-22 18:08:07,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:08:07,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2020-12-22 18:08:07,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 733. [2020-12-22 18:08:07,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-12-22 18:08:07,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 917 transitions. [2020-12-22 18:08:07,307 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 917 transitions. Word has length 157 [2020-12-22 18:08:07,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:08:07,307 INFO L481 AbstractCegarLoop]: Abstraction has 733 states and 917 transitions. [2020-12-22 18:08:07,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:08:07,307 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 917 transitions. [2020-12-22 18:08:07,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 18:08:07,309 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:08:07,309 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:08:07,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 18:08:07,523 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:08:07,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:08:07,524 INFO L82 PathProgramCache]: Analyzing trace with hash 639166515, now seen corresponding path program 1 times [2020-12-22 18:08:07,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:08:07,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865464601] [2020-12-22 18:08:07,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:08:07,541 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:08:07,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1990082994] [2020-12-22 18:08:07,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 18:08:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:08:07,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 18:08:07,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:08:08,075 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 18:08:08,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865464601] [2020-12-22 18:08:08,075 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:08:08,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990082994] [2020-12-22 18:08:08,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:08:08,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 18:08:08,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697422991] [2020-12-22 18:08:08,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 18:08:08,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:08:08,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 18:08:08,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 18:08:08,077 INFO L87 Difference]: Start difference. First operand 733 states and 917 transitions. Second operand 6 states. [2020-12-22 18:08:08,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:08:08,192 INFO L93 Difference]: Finished difference Result 1424 states and 1796 transitions. [2020-12-22 18:08:08,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 18:08:08,193 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-12-22 18:08:08,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:08:08,197 INFO L225 Difference]: With dead ends: 1424 [2020-12-22 18:08:08,198 INFO L226 Difference]: Without dead ends: 739 [2020-12-22 18:08:08,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 18:08:08,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-12-22 18:08:08,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 739. [2020-12-22 18:08:08,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-12-22 18:08:08,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 923 transitions. [2020-12-22 18:08:08,226 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 923 transitions. Word has length 157 [2020-12-22 18:08:08,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:08:08,227 INFO L481 AbstractCegarLoop]: Abstraction has 739 states and 923 transitions. [2020-12-22 18:08:08,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 18:08:08,227 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 923 transitions. [2020-12-22 18:08:08,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-12-22 18:08:08,229 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:08:08,229 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:08:08,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:08:08,443 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:08:08,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:08:08,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1050888114, now seen corresponding path program 2 times [2020-12-22 18:08:08,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:08:08,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226254248] [2020-12-22 18:08:08,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:08:08,481 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:08:08,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [621270991] [2020-12-22 18:08:08,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 18:08:08,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:08:08,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:08:08,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 18:08:08,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:08:09,080 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 18:08:09,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226254248] [2020-12-22 18:08:09,081 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:08:09,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621270991] [2020-12-22 18:08:09,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:08:09,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 18:08:09,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892735609] [2020-12-22 18:08:09,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 18:08:09,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:08:09,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 18:08:09,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 18:08:09,083 INFO L87 Difference]: Start difference. First operand 739 states and 923 transitions. Second operand 7 states. [2020-12-22 18:08:09,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:08:09,206 INFO L93 Difference]: Finished difference Result 1435 states and 1807 transitions. [2020-12-22 18:08:09,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 18:08:09,207 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 159 [2020-12-22 18:08:09,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:08:09,211 INFO L225 Difference]: With dead ends: 1435 [2020-12-22 18:08:09,211 INFO L226 Difference]: Without dead ends: 745 [2020-12-22 18:08:09,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 18:08:09,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2020-12-22 18:08:09,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 745. [2020-12-22 18:08:09,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 745 states. [2020-12-22 18:08:09,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 929 transitions. [2020-12-22 18:08:09,239 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 929 transitions. Word has length 159 [2020-12-22 18:08:09,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:08:09,240 INFO L481 AbstractCegarLoop]: Abstraction has 745 states and 929 transitions. [2020-12-22 18:08:09,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 18:08:09,240 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 929 transitions. [2020-12-22 18:08:09,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-12-22 18:08:09,242 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:08:09,242 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:08:09,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 18:08:09,456 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:08:09,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:08:09,456 INFO L82 PathProgramCache]: Analyzing trace with hash 770488787, now seen corresponding path program 3 times [2020-12-22 18:08:09,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:08:09,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101095894] [2020-12-22 18:08:09,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:08:09,477 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:08:09,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1908861283] [2020-12-22 18:08:09,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:08:09,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 18:08:09,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:08:09,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 18:08:09,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:08:10,034 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-22 18:08:10,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101095894] [2020-12-22 18:08:10,035 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:08:10,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908861283] [2020-12-22 18:08:10,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:08:10,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:08:10,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174452027] [2020-12-22 18:08:10,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:08:10,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:08:10,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:08:10,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:08:10,038 INFO L87 Difference]: Start difference. First operand 745 states and 929 transitions. Second operand 3 states. [2020-12-22 18:08:10,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:08:10,146 INFO L93 Difference]: Finished difference Result 1749 states and 2217 transitions. [2020-12-22 18:08:10,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:08:10,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2020-12-22 18:08:10,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:08:10,152 INFO L225 Difference]: With dead ends: 1749 [2020-12-22 18:08:10,152 INFO L226 Difference]: Without dead ends: 1063 [2020-12-22 18:08:10,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:08:10,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2020-12-22 18:08:10,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 906. [2020-12-22 18:08:10,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2020-12-22 18:08:10,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1156 transitions. [2020-12-22 18:08:10,190 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1156 transitions. Word has length 161 [2020-12-22 18:08:10,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:08:10,191 INFO L481 AbstractCegarLoop]: Abstraction has 906 states and 1156 transitions. [2020-12-22 18:08:10,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:08:10,191 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1156 transitions. [2020-12-22 18:08:10,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-12-22 18:08:10,193 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:08:10,193 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:08:10,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 18:08:10,407 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:08:10,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:08:10,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1484056676, now seen corresponding path program 1 times [2020-12-22 18:08:10,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:08:10,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907389296] [2020-12-22 18:08:10,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:08:10,429 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:08:10,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [353015360] [2020-12-22 18:08:10,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:08:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:08:10,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 18:08:10,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:08:11,059 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-12-22 18:08:11,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907389296] [2020-12-22 18:08:11,059 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:08:11,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353015360] [2020-12-22 18:08:11,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:08:11,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 18:08:11,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686837387] [2020-12-22 18:08:11,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 18:08:11,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:08:11,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 18:08:11,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 18:08:11,062 INFO L87 Difference]: Start difference. First operand 906 states and 1156 transitions. Second operand 8 states. [2020-12-22 18:08:11,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:08:11,213 INFO L93 Difference]: Finished difference Result 1770 states and 2275 transitions. [2020-12-22 18:08:11,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 18:08:11,214 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 178 [2020-12-22 18:08:11,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:08:11,242 INFO L225 Difference]: With dead ends: 1770 [2020-12-22 18:08:11,243 INFO L226 Difference]: Without dead ends: 912 [2020-12-22 18:08:11,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 18:08:11,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2020-12-22 18:08:11,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 912. [2020-12-22 18:08:11,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 912 states. [2020-12-22 18:08:11,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1162 transitions. [2020-12-22 18:08:11,285 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1162 transitions. Word has length 178 [2020-12-22 18:08:11,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:08:11,285 INFO L481 AbstractCegarLoop]: Abstraction has 912 states and 1162 transitions. [2020-12-22 18:08:11,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 18:08:11,285 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1162 transitions. [2020-12-22 18:08:11,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-12-22 18:08:11,288 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:08:11,288 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:08:11,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:08:11,503 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:08:11,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:08:11,504 INFO L82 PathProgramCache]: Analyzing trace with hash -453644734, now seen corresponding path program 2 times [2020-12-22 18:08:11,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:08:11,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505692161] [2020-12-22 18:08:11,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:08:11,527 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:08:11,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1483679658] [2020-12-22 18:08:11,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:08:11,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:08:11,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:08:11,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 18:08:11,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:08:12,188 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-12-22 18:08:12,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505692161] [2020-12-22 18:08:12,188 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:08:12,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483679658] [2020-12-22 18:08:12,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:08:12,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 18:08:12,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117258049] [2020-12-22 18:08:12,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 18:08:12,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:08:12,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 18:08:12,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-22 18:08:12,190 INFO L87 Difference]: Start difference. First operand 912 states and 1162 transitions. Second operand 9 states. [2020-12-22 18:08:12,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:08:12,345 INFO L93 Difference]: Finished difference Result 1781 states and 2286 transitions. [2020-12-22 18:08:12,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 18:08:12,346 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 182 [2020-12-22 18:08:12,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:08:12,355 INFO L225 Difference]: With dead ends: 1781 [2020-12-22 18:08:12,356 INFO L226 Difference]: Without dead ends: 918 [2020-12-22 18:08:12,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-22 18:08:12,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2020-12-22 18:08:12,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 918. [2020-12-22 18:08:12,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 918 states. [2020-12-22 18:08:12,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1168 transitions. [2020-12-22 18:08:12,410 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1168 transitions. Word has length 182 [2020-12-22 18:08:12,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:08:12,410 INFO L481 AbstractCegarLoop]: Abstraction has 918 states and 1168 transitions. [2020-12-22 18:08:12,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 18:08:12,410 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1168 transitions. [2020-12-22 18:08:12,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-12-22 18:08:12,411 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:08:12,412 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:08:12,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:08:12,627 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:08:12,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:08:12,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1986963428, now seen corresponding path program 3 times [2020-12-22 18:08:12,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:08:12,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429633558] [2020-12-22 18:08:12,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:08:12,649 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:08:12,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1188591491] [2020-12-22 18:08:12,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:08:13,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 18:08:13,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:08:13,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 18:08:13,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:08:13,437 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-12-22 18:08:13,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429633558] [2020-12-22 18:08:13,438 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:08:13,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188591491] [2020-12-22 18:08:13,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:08:13,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:08:13,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152373975] [2020-12-22 18:08:13,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:08:13,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:08:13,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:08:13,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:08:13,440 INFO L87 Difference]: Start difference. First operand 918 states and 1168 transitions. Second operand 4 states. [2020-12-22 18:08:14,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:08:14,022 INFO L93 Difference]: Finished difference Result 1509 states and 1921 transitions. [2020-12-22 18:08:14,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:08:14,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 186 [2020-12-22 18:08:14,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:08:14,027 INFO L225 Difference]: With dead ends: 1509 [2020-12-22 18:08:14,027 INFO L226 Difference]: Without dead ends: 732 [2020-12-22 18:08:14,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:08:14,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2020-12-22 18:08:14,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 732. [2020-12-22 18:08:14,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-12-22 18:08:14,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 909 transitions. [2020-12-22 18:08:14,063 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 909 transitions. Word has length 186 [2020-12-22 18:08:14,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:08:14,064 INFO L481 AbstractCegarLoop]: Abstraction has 732 states and 909 transitions. [2020-12-22 18:08:14,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:08:14,064 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 909 transitions. [2020-12-22 18:08:14,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-12-22 18:08:14,065 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:08:14,066 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:08:14,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:08:14,280 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:08:14,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:08:14,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1622468887, now seen corresponding path program 1 times [2020-12-22 18:08:14,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:08:14,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629089806] [2020-12-22 18:08:14,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:08:14,300 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:08:14,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1729570282] [2020-12-22 18:08:14,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:08:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:08:14,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 18:08:14,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:08:15,023 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-12-22 18:08:15,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629089806] [2020-12-22 18:08:15,023 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:08:15,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729570282] [2020-12-22 18:08:15,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:08:15,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 18:08:15,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429907907] [2020-12-22 18:08:15,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 18:08:15,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:08:15,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 18:08:15,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-22 18:08:15,025 INFO L87 Difference]: Start difference. First operand 732 states and 909 transitions. Second operand 10 states. [2020-12-22 18:08:15,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:08:15,206 INFO L93 Difference]: Finished difference Result 1418 states and 1775 transitions. [2020-12-22 18:08:15,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 18:08:15,207 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 193 [2020-12-22 18:08:15,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:08:15,211 INFO L225 Difference]: With dead ends: 1418 [2020-12-22 18:08:15,211 INFO L226 Difference]: Without dead ends: 736 [2020-12-22 18:08:15,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-22 18:08:15,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2020-12-22 18:08:15,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 736. [2020-12-22 18:08:15,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 736 states. [2020-12-22 18:08:15,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 913 transitions. [2020-12-22 18:08:15,248 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 913 transitions. Word has length 193 [2020-12-22 18:08:15,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:08:15,248 INFO L481 AbstractCegarLoop]: Abstraction has 736 states and 913 transitions. [2020-12-22 18:08:15,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 18:08:15,248 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 913 transitions. [2020-12-22 18:08:15,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-12-22 18:08:15,250 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:08:15,250 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:08:15,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 18:08:15,465 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:08:15,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:08:15,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1336921525, now seen corresponding path program 2 times [2020-12-22 18:08:15,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:08:15,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684300371] [2020-12-22 18:08:15,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:08:15,489 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:08:15,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [881291495] [2020-12-22 18:08:15,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:08:15,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:08:15,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:08:15,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 18:08:15,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:08:16,225 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-12-22 18:08:16,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684300371] [2020-12-22 18:08:16,226 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:08:16,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881291495] [2020-12-22 18:08:16,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:08:16,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 18:08:16,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979815435] [2020-12-22 18:08:16,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 18:08:16,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:08:16,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 18:08:16,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-22 18:08:16,228 INFO L87 Difference]: Start difference. First operand 736 states and 913 transitions. Second operand 11 states. [2020-12-22 18:08:16,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:08:16,431 INFO L93 Difference]: Finished difference Result 1425 states and 1782 transitions. [2020-12-22 18:08:16,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 18:08:16,432 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 197 [2020-12-22 18:08:16,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:08:16,436 INFO L225 Difference]: With dead ends: 1425 [2020-12-22 18:08:16,436 INFO L226 Difference]: Without dead ends: 740 [2020-12-22 18:08:16,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-22 18:08:16,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2020-12-22 18:08:16,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 740. [2020-12-22 18:08:16,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 740 states. [2020-12-22 18:08:16,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 917 transitions. [2020-12-22 18:08:16,474 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 917 transitions. Word has length 197 [2020-12-22 18:08:16,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:08:16,475 INFO L481 AbstractCegarLoop]: Abstraction has 740 states and 917 transitions. [2020-12-22 18:08:16,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 18:08:16,475 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 917 transitions. [2020-12-22 18:08:16,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-12-22 18:08:16,476 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:08:16,477 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:08:16,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-22 18:08:16,691 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:08:16,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:08:16,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1628837737, now seen corresponding path program 3 times [2020-12-22 18:08:16,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:08:16,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41780319] [2020-12-22 18:08:16,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:08:16,716 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:08:16,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1410583121] [2020-12-22 18:08:16,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true