/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_BER_test10-3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 18:01:49,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 18:01:49,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 18:01:49,327 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 18:01:49,327 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 18:01:49,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 18:01:49,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 18:01:49,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 18:01:49,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 18:01:49,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 18:01:49,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 18:01:49,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 18:01:49,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 18:01:49,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 18:01:49,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 18:01:49,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 18:01:49,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 18:01:49,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 18:01:49,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 18:01:49,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 18:01:49,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 18:01:49,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 18:01:49,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 18:01:49,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 18:01:49,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 18:01:49,388 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 18:01:49,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 18:01:49,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 18:01:49,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 18:01:49,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 18:01:49,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 18:01:49,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 18:01:49,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 18:01:49,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 18:01:49,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 18:01:49,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 18:01:49,403 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 18:01:49,457 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 18:01:49,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 18:01:49,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 18:01:49,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 18:01:49,463 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 18:01:49,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 18:01:49,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 18:01:49,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 18:01:49,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 18:01:49,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 18:01:49,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 18:01:49,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 18:01:49,466 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 18:01:49,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 18:01:49,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 18:01:49,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 18:01:49,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 18:01:49,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 18:01:49,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 18:01:49,467 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 18:01:49,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 18:01:49,468 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 18:01:49,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 18:01:49,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 18:01:49,468 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 18:01:49,468 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 18:01:49,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 18:01:49,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 18:01:49,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 18:01:49,939 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 18:01:49,940 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 18:01:49,941 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i [2020-12-22 18:01:50,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f91a0c809/1fc9c442a2bc47c09c9643806b2e59c1/FLAG28ad6b96f [2020-12-22 18:01:50,923 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 18:01:50,923 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i [2020-12-22 18:01:50,956 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f91a0c809/1fc9c442a2bc47c09c9643806b2e59c1/FLAG28ad6b96f [2020-12-22 18:01:51,071 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f91a0c809/1fc9c442a2bc47c09c9643806b2e59c1 [2020-12-22 18:01:51,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 18:01:51,081 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 18:01:51,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 18:01:51,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 18:01:51,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 18:01:51,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:01:51" (1/1) ... [2020-12-22 18:01:51,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f09fb2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:51, skipping insertion in model container [2020-12-22 18:01:51,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:01:51" (1/1) ... [2020-12-22 18:01:51,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 18:01:51,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 18:01:51,724 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_BER_test10-3.i[33022,33035] [2020-12-22 18:01:52,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 18:01:52,073 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 18:01:52,111 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_BER_test10-3.i[33022,33035] [2020-12-22 18:01:52,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 18:01:52,526 INFO L208 MainTranslator]: Completed translation [2020-12-22 18:01:52,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:52 WrapperNode [2020-12-22 18:01:52,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 18:01:52,531 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 18:01:52,531 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 18:01:52,531 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 18:01:52,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:52" (1/1) ... [2020-12-22 18:01:52,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:52" (1/1) ... [2020-12-22 18:01:52,834 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 18:01:52,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 18:01:52,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 18:01:52,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 18:01:52,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:52" (1/1) ... [2020-12-22 18:01:52,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:52" (1/1) ... [2020-12-22 18:01:52,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:52" (1/1) ... [2020-12-22 18:01:52,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:52" (1/1) ... [2020-12-22 18:01:52,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:52" (1/1) ... [2020-12-22 18:01:53,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:52" (1/1) ... [2020-12-22 18:01:53,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:52" (1/1) ... [2020-12-22 18:01:53,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 18:01:53,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 18:01:53,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 18:01:53,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 18:01:53,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:52" (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 18:01:53,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 18:01:53,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 18:01:53,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 18:01:53,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 18:01:53,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 18:01:53,250 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-12-22 18:01:53,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 18:01:53,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 18:01:53,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 18:01:53,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 18:01:53,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 18:01:56,167 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 18:01:56,167 INFO L299 CfgBuilder]: Removed 224 assume(true) statements. [2020-12-22 18:01:56,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:01:56 BoogieIcfgContainer [2020-12-22 18:01:56,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 18:01:56,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 18:01:56,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 18:01:56,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 18:01:56,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:01:51" (1/3) ... [2020-12-22 18:01:56,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff00b68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:01:56, skipping insertion in model container [2020-12-22 18:01:56,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:52" (2/3) ... [2020-12-22 18:01:56,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff00b68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:01:56, skipping insertion in model container [2020-12-22 18:01:56,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:01:56" (3/3) ... [2020-12-22 18:01:56,180 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test10-3.i [2020-12-22 18:01:56,188 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 18:01:56,194 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-12-22 18:01:56,215 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-12-22 18:01:56,249 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 18:01:56,249 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 18:01:56,249 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 18:01:56,249 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 18:01:56,249 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 18:01:56,249 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 18:01:56,250 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 18:01:56,250 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 18:01:56,280 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states. [2020-12-22 18:01:56,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 18:01:56,287 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:01:56,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:01:56,289 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 18:01:56,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:01:56,296 INFO L82 PathProgramCache]: Analyzing trace with hash -128377380, now seen corresponding path program 1 times [2020-12-22 18:01:56,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:01:56,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216056696] [2020-12-22 18:01:56,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:01:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:01:56,500 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 18:01:56,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216056696] [2020-12-22 18:01:56,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:01:56,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 18:01:56,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790582162] [2020-12-22 18:01:56,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 18:01:56,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:01:56,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 18:01:56,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 18:01:56,527 INFO L87 Difference]: Start difference. First operand 520 states. Second operand 2 states. [2020-12-22 18:01:56,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:01:56,602 INFO L93 Difference]: Finished difference Result 1038 states and 1752 transitions. [2020-12-22 18:01:56,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 18:01:56,604 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-12-22 18:01:56,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:01:56,632 INFO L225 Difference]: With dead ends: 1038 [2020-12-22 18:01:56,632 INFO L226 Difference]: Without dead ends: 465 [2020-12-22 18:01:56,646 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 18:01:56,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2020-12-22 18:01:56,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2020-12-22 18:01:56,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-12-22 18:01:56,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 608 transitions. [2020-12-22 18:01:56,749 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 608 transitions. Word has length 9 [2020-12-22 18:01:56,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:01:56,749 INFO L481 AbstractCegarLoop]: Abstraction has 465 states and 608 transitions. [2020-12-22 18:01:56,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 18:01:56,750 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 608 transitions. [2020-12-22 18:01:56,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 18:01:56,760 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:01:56,760 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 18:01:56,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 18:01:56,761 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 18:01:56,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:01:56,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1568739198, now seen corresponding path program 1 times [2020-12-22 18:01:56,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:01:56,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778164627] [2020-12-22 18:01:56,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:01:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:01:56,881 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 18:01:56,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778164627] [2020-12-22 18:01:56,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:01:56,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:01:56,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952515985] [2020-12-22 18:01:56,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:01:56,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:01:56,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:01:56,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:01:56,886 INFO L87 Difference]: Start difference. First operand 465 states and 608 transitions. Second operand 4 states. [2020-12-22 18:01:58,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:01:58,188 INFO L93 Difference]: Finished difference Result 831 states and 1087 transitions. [2020-12-22 18:01:58,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:01:58,189 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-12-22 18:01:58,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:01:58,198 INFO L225 Difference]: With dead ends: 831 [2020-12-22 18:01:58,198 INFO L226 Difference]: Without dead ends: 540 [2020-12-22 18:01:58,201 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 18:01:58,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2020-12-22 18:01:58,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 467. [2020-12-22 18:01:58,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-12-22 18:01:58,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 610 transitions. [2020-12-22 18:01:58,250 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 610 transitions. Word has length 44 [2020-12-22 18:01:58,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:01:58,251 INFO L481 AbstractCegarLoop]: Abstraction has 467 states and 610 transitions. [2020-12-22 18:01:58,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:01:58,251 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 610 transitions. [2020-12-22 18:01:58,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 18:01:58,263 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:01:58,264 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 18:01:58,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 18:01:58,264 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 18:01:58,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:01:58,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1325558428, now seen corresponding path program 1 times [2020-12-22 18:01:58,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:01:58,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627948635] [2020-12-22 18:01:58,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:01:58,341 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:01:58,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [785696216] [2020-12-22 18:01:58,344 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 18:01:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:01:58,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:01:58,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:01:59,027 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 18:01:59,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627948635] [2020-12-22 18:01:59,028 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:01:59,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785696216] [2020-12-22 18:01:59,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:01:59,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:01:59,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399782560] [2020-12-22 18:01:59,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:01:59,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:01:59,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:01:59,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:01:59,038 INFO L87 Difference]: Start difference. First operand 467 states and 610 transitions. Second operand 3 states. [2020-12-22 18:01:59,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:01:59,181 INFO L93 Difference]: Finished difference Result 951 states and 1247 transitions. [2020-12-22 18:01:59,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:01:59,182 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-22 18:01:59,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:01:59,185 INFO L225 Difference]: With dead ends: 951 [2020-12-22 18:01:59,186 INFO L226 Difference]: Without dead ends: 488 [2020-12-22 18:01:59,188 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 18:01:59,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-12-22 18:01:59,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 487. [2020-12-22 18:01:59,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2020-12-22 18:01:59,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 630 transitions. [2020-12-22 18:01:59,212 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 630 transitions. Word has length 97 [2020-12-22 18:01:59,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:01:59,213 INFO L481 AbstractCegarLoop]: Abstraction has 487 states and 630 transitions. [2020-12-22 18:01:59,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:01:59,213 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 630 transitions. [2020-12-22 18:01:59,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 18:01:59,218 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:01:59,219 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 18:01:59,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 18:01:59,435 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 18:01:59,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:01:59,437 INFO L82 PathProgramCache]: Analyzing trace with hash 948433376, now seen corresponding path program 1 times [2020-12-22 18:01:59,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:01:59,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639895751] [2020-12-22 18:01:59,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:01:59,499 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:01:59,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1214628461] [2020-12-22 18:01:59,504 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 18:01:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:01:59,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:01:59,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:02:00,015 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 18:02:00,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639895751] [2020-12-22 18:02:00,016 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:02:00,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214628461] [2020-12-22 18:02:00,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:02:00,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:02:00,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960499212] [2020-12-22 18:02:00,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:02:00,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:02:00,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:02:00,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:02:00,018 INFO L87 Difference]: Start difference. First operand 487 states and 630 transitions. Second operand 3 states. [2020-12-22 18:02:00,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:02:00,121 INFO L93 Difference]: Finished difference Result 787 states and 1024 transitions. [2020-12-22 18:02:00,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:02:00,122 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-22 18:02:00,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:02:00,126 INFO L225 Difference]: With dead ends: 787 [2020-12-22 18:02:00,126 INFO L226 Difference]: Without dead ends: 508 [2020-12-22 18:02:00,128 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 18:02:00,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-12-22 18:02:00,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 507. [2020-12-22 18:02:00,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-12-22 18:02:00,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 650 transitions. [2020-12-22 18:02:00,147 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 650 transitions. Word has length 97 [2020-12-22 18:02:00,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:02:00,149 INFO L481 AbstractCegarLoop]: Abstraction has 507 states and 650 transitions. [2020-12-22 18:02:00,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:02:00,150 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 650 transitions. [2020-12-22 18:02:00,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 18:02:00,152 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:02:00,153 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 18:02:00,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:02:00,366 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 18:02:00,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:02:00,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1352389214, now seen corresponding path program 1 times [2020-12-22 18:02:00,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:02:00,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43756260] [2020-12-22 18:02:00,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:02:00,412 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:02:00,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [306408333] [2020-12-22 18:02:00,412 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 18:02:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:02:00,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:02:00,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:02:00,847 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 18:02:00,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43756260] [2020-12-22 18:02:00,847 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:02:00,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306408333] [2020-12-22 18:02:00,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:02:00,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:02:00,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721018606] [2020-12-22 18:02:00,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:02:00,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:02:00,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:02:00,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:02:00,850 INFO L87 Difference]: Start difference. First operand 507 states and 650 transitions. Second operand 4 states. [2020-12-22 18:02:00,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:02:00,960 INFO L93 Difference]: Finished difference Result 1086 states and 1400 transitions. [2020-12-22 18:02:00,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:02:00,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-12-22 18:02:00,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:02:00,964 INFO L225 Difference]: With dead ends: 1086 [2020-12-22 18:02:00,964 INFO L226 Difference]: Without dead ends: 583 [2020-12-22 18:02:00,966 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 18:02:00,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2020-12-22 18:02:00,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 493. [2020-12-22 18:02:00,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-12-22 18:02:00,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 629 transitions. [2020-12-22 18:02:00,981 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 629 transitions. Word has length 97 [2020-12-22 18:02:00,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:02:00,982 INFO L481 AbstractCegarLoop]: Abstraction has 493 states and 629 transitions. [2020-12-22 18:02:00,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:02:00,982 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 629 transitions. [2020-12-22 18:02:00,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 18:02:00,983 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:02:00,984 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 18:02:01,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:02:01,189 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 18:02:01,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:02:01,190 INFO L82 PathProgramCache]: Analyzing trace with hash 881478960, now seen corresponding path program 1 times [2020-12-22 18:02:01,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:02:01,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053842113] [2020-12-22 18:02:01,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:02:01,212 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:02:01,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1192399301] [2020-12-22 18:02:01,213 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 18:02:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:02:01,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:02:01,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:02:01,645 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 18:02:01,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053842113] [2020-12-22 18:02:01,646 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:02:01,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192399301] [2020-12-22 18:02:01,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:02:01,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:02:01,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953849667] [2020-12-22 18:02:01,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:02:01,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:02:01,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:02:01,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:02:01,649 INFO L87 Difference]: Start difference. First operand 493 states and 629 transitions. Second operand 4 states. [2020-12-22 18:02:01,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:02:01,758 INFO L93 Difference]: Finished difference Result 761 states and 972 transitions. [2020-12-22 18:02:01,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:02:01,759 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-12-22 18:02:01,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:02:01,762 INFO L225 Difference]: With dead ends: 761 [2020-12-22 18:02:01,762 INFO L226 Difference]: Without dead ends: 480 [2020-12-22 18:02:01,763 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 18:02:01,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2020-12-22 18:02:01,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 479. [2020-12-22 18:02:01,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-12-22 18:02:01,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 608 transitions. [2020-12-22 18:02:01,778 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 608 transitions. Word has length 97 [2020-12-22 18:02:01,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:02:01,779 INFO L481 AbstractCegarLoop]: Abstraction has 479 states and 608 transitions. [2020-12-22 18:02:01,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:02:01,779 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 608 transitions. [2020-12-22 18:02:01,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 18:02:01,781 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:02:01,781 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 18:02:01,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:02:01,996 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 18:02:01,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:02:01,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1427704734, now seen corresponding path program 1 times [2020-12-22 18:02:01,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:02:01,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461571904] [2020-12-22 18:02:01,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:02:02,034 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:02:02,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1788330081] [2020-12-22 18:02:02,035 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 18:02:02,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:02:02,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 18:02:02,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:02:02,547 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 18:02:02,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461571904] [2020-12-22 18:02:02,548 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:02:02,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788330081] [2020-12-22 18:02:02,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:02:02,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:02:02,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855781428] [2020-12-22 18:02:02,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:02:02,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:02:02,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:02:02,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:02:02,550 INFO L87 Difference]: Start difference. First operand 479 states and 608 transitions. Second operand 3 states. [2020-12-22 18:02:02,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:02:02,652 INFO L93 Difference]: Finished difference Result 1231 states and 1562 transitions. [2020-12-22 18:02:02,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:02:02,652 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-22 18:02:02,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:02:02,657 INFO L225 Difference]: With dead ends: 1231 [2020-12-22 18:02:02,657 INFO L226 Difference]: Without dead ends: 756 [2020-12-22 18:02:02,659 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 18:02:02,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2020-12-22 18:02:02,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 721. [2020-12-22 18:02:02,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2020-12-22 18:02:02,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 930 transitions. [2020-12-22 18:02:02,682 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 930 transitions. Word has length 97 [2020-12-22 18:02:02,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:02:02,682 INFO L481 AbstractCegarLoop]: Abstraction has 721 states and 930 transitions. [2020-12-22 18:02:02,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:02:02,682 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 930 transitions. [2020-12-22 18:02:02,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-22 18:02:02,684 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:02:02,684 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 18:02:02,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 18:02:02,898 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 18:02:02,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:02:02,898 INFO L82 PathProgramCache]: Analyzing trace with hash -371205377, now seen corresponding path program 1 times [2020-12-22 18:02:02,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:02:02,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974258387] [2020-12-22 18:02:02,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:02:02,919 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:02:02,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1330950291] [2020-12-22 18:02:02,920 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 18:02:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:02:03,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:02:03,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:02:03,412 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 18:02:03,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974258387] [2020-12-22 18:02:03,413 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:02:03,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330950291] [2020-12-22 18:02:03,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:02:03,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:02:03,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119572340] [2020-12-22 18:02:03,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:02:03,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:02:03,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:02:03,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:02:03,416 INFO L87 Difference]: Start difference. First operand 721 states and 930 transitions. Second operand 3 states. [2020-12-22 18:02:03,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:02:03,485 INFO L93 Difference]: Finished difference Result 1400 states and 1809 transitions. [2020-12-22 18:02:03,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:02:03,486 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2020-12-22 18:02:03,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:02:03,492 INFO L225 Difference]: With dead ends: 1400 [2020-12-22 18:02:03,492 INFO L226 Difference]: Without dead ends: 727 [2020-12-22 18:02:03,494 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 18:02:03,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2020-12-22 18:02:03,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2020-12-22 18:02:03,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-12-22 18:02:03,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 936 transitions. [2020-12-22 18:02:03,525 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 936 transitions. Word has length 104 [2020-12-22 18:02:03,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:02:03,526 INFO L481 AbstractCegarLoop]: Abstraction has 727 states and 936 transitions. [2020-12-22 18:02:03,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:02:03,526 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 936 transitions. [2020-12-22 18:02:03,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 18:02:03,528 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:02:03,528 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 18:02:03,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:02:03,744 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 18:02:03,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:02:03,746 INFO L82 PathProgramCache]: Analyzing trace with hash -2085853600, now seen corresponding path program 1 times [2020-12-22 18:02:03,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:02:03,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806117247] [2020-12-22 18:02:03,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:02:03,768 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:02:03,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1392959655] [2020-12-22 18:02:03,769 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 18:02:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:02:04,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 18:02:04,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:02:04,205 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 18:02:04,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806117247] [2020-12-22 18:02:04,206 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:02:04,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392959655] [2020-12-22 18:02:04,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:02:04,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-22 18:02:04,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155380239] [2020-12-22 18:02:04,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:02:04,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:02:04,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:02:04,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:02:04,208 INFO L87 Difference]: Start difference. First operand 727 states and 936 transitions. Second operand 4 states. [2020-12-22 18:02:04,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:02:04,296 INFO L93 Difference]: Finished difference Result 1411 states and 1820 transitions. [2020-12-22 18:02:04,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:02:04,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2020-12-22 18:02:04,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:02:04,302 INFO L225 Difference]: With dead ends: 1411 [2020-12-22 18:02:04,302 INFO L226 Difference]: Without dead ends: 733 [2020-12-22 18:02:04,304 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 18:02:04,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2020-12-22 18:02:04,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 733. [2020-12-22 18:02:04,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-12-22 18:02:04,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 942 transitions. [2020-12-22 18:02:04,328 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 942 transitions. Word has length 106 [2020-12-22 18:02:04,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:02:04,328 INFO L481 AbstractCegarLoop]: Abstraction has 733 states and 942 transitions. [2020-12-22 18:02:04,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:02:04,328 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 942 transitions. [2020-12-22 18:02:04,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 18:02:04,330 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:02:04,331 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 18:02:04,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:02:04,545 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 18:02:04,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:02:04,547 INFO L82 PathProgramCache]: Analyzing trace with hash -462744993, now seen corresponding path program 2 times [2020-12-22 18:02:04,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:02:04,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377187682] [2020-12-22 18:02:04,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:02:04,566 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:02:04,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [354531160] [2020-12-22 18:02:04,566 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 18:02:04,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:02:04,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:02:04,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 18:02:04,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:02:05,094 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 18:02:05,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377187682] [2020-12-22 18:02:05,094 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:02:05,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354531160] [2020-12-22 18:02:05,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:02:05,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 18:02:05,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728235851] [2020-12-22 18:02:05,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 18:02:05,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:02:05,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 18:02:05,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:02:05,097 INFO L87 Difference]: Start difference. First operand 733 states and 942 transitions. Second operand 5 states. [2020-12-22 18:02:05,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:02:05,218 INFO L93 Difference]: Finished difference Result 1422 states and 1831 transitions. [2020-12-22 18:02:05,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 18:02:05,219 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-12-22 18:02:05,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:02:05,223 INFO L225 Difference]: With dead ends: 1422 [2020-12-22 18:02:05,223 INFO L226 Difference]: Without dead ends: 739 [2020-12-22 18:02:05,225 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 18:02:05,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-12-22 18:02:05,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 739. [2020-12-22 18:02:05,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-12-22 18:02:05,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 948 transitions. [2020-12-22 18:02:05,248 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 948 transitions. Word has length 108 [2020-12-22 18:02:05,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:02:05,248 INFO L481 AbstractCegarLoop]: Abstraction has 739 states and 948 transitions. [2020-12-22 18:02:05,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 18:02:05,248 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 948 transitions. [2020-12-22 18:02:05,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 18:02:05,250 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:02:05,250 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 18:02:05,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 18:02:05,466 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 18:02:05,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:02:05,468 INFO L82 PathProgramCache]: Analyzing trace with hash 87417216, now seen corresponding path program 3 times [2020-12-22 18:02:05,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:02:05,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123632011] [2020-12-22 18:02:05,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:02:05,488 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:02:05,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1508920177] [2020-12-22 18:02:05,489 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 18:02:05,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 18:02:05,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:02:05,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 18:02:05,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:02:05,894 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 18:02:05,895 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:02:05,902 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:02:05,903 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:02:05,904 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-12-22 18:02:05,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 18:02:05,961 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 18:02:05,962 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:02:05,968 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:02:05,970 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 18:02:05,970 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:71, output treesize:3 [2020-12-22 18:02:06,074 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 18:02:06,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123632011] [2020-12-22 18:02:06,075 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:02:06,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508920177] [2020-12-22 18:02:06,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:02:06,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 18:02:06,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511470960] [2020-12-22 18:02:06,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 18:02:06,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:02:06,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 18:02:06,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:02:06,077 INFO L87 Difference]: Start difference. First operand 739 states and 948 transitions. Second operand 5 states. [2020-12-22 18:02:07,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:02:07,253 INFO L93 Difference]: Finished difference Result 1382 states and 1772 transitions. [2020-12-22 18:02:07,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 18:02:07,253 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-12-22 18:02:07,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:02:07,258 INFO L225 Difference]: With dead ends: 1382 [2020-12-22 18:02:07,258 INFO L226 Difference]: Without dead ends: 739 [2020-12-22 18:02:07,260 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 18:02:07,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-12-22 18:02:07,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 739. [2020-12-22 18:02:07,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-12-22 18:02:07,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 947 transitions. [2020-12-22 18:02:07,284 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 947 transitions. Word has length 110 [2020-12-22 18:02:07,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:02:07,284 INFO L481 AbstractCegarLoop]: Abstraction has 739 states and 947 transitions. [2020-12-22 18:02:07,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 18:02:07,284 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 947 transitions. [2020-12-22 18:02:07,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 18:02:07,287 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:02:07,287 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 18:02:07,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:02:07,499 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 18:02:07,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:02:07,500 INFO L82 PathProgramCache]: Analyzing trace with hash -2117457625, now seen corresponding path program 1 times [2020-12-22 18:02:07,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:02:07,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453336709] [2020-12-22 18:02:07,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:02:07,522 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:02:07,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747795074] [2020-12-22 18:02:07,523 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 18:02:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:02:07,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:02:07,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:02:08,046 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 18:02:08,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453336709] [2020-12-22 18:02:08,047 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:02:08,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747795074] [2020-12-22 18:02:08,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:02:08,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:02:08,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399018625] [2020-12-22 18:02:08,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:02:08,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:02:08,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:02:08,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:02:08,049 INFO L87 Difference]: Start difference. First operand 739 states and 947 transitions. Second operand 3 states. [2020-12-22 18:02:08,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:02:08,160 INFO L93 Difference]: Finished difference Result 1502 states and 1935 transitions. [2020-12-22 18:02:08,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:02:08,161 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2020-12-22 18:02:08,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:02:08,165 INFO L225 Difference]: With dead ends: 1502 [2020-12-22 18:02:08,166 INFO L226 Difference]: Without dead ends: 781 [2020-12-22 18:02:08,167 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 18:02:08,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-12-22 18:02:08,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 779. [2020-12-22 18:02:08,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 779 states. [2020-12-22 18:02:08,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 987 transitions. [2020-12-22 18:02:08,194 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 987 transitions. Word has length 157 [2020-12-22 18:02:08,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:02:08,194 INFO L481 AbstractCegarLoop]: Abstraction has 779 states and 987 transitions. [2020-12-22 18:02:08,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:02:08,194 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 987 transitions. [2020-12-22 18:02:08,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 18:02:08,197 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:02:08,197 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 18:02:08,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:02:08,411 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 18:02:08,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:02:08,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1572585051, now seen corresponding path program 1 times [2020-12-22 18:02:08,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:02:08,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848144360] [2020-12-22 18:02:08,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:02:08,431 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:02:08,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [743001446] [2020-12-22 18:02:08,432 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 18:02:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:02:08,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:02:08,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:02:08,990 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 18:02:08,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848144360] [2020-12-22 18:02:08,990 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:02:08,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743001446] [2020-12-22 18:02:08,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:02:08,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:02:08,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346901459] [2020-12-22 18:02:08,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:02:08,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:02:08,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:02:08,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:02:08,993 INFO L87 Difference]: Start difference. First operand 779 states and 987 transitions. Second operand 4 states. [2020-12-22 18:02:09,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:02:09,161 INFO L93 Difference]: Finished difference Result 1496 states and 1900 transitions. [2020-12-22 18:02:09,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:02:09,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2020-12-22 18:02:09,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:02:09,165 INFO L225 Difference]: With dead ends: 1496 [2020-12-22 18:02:09,166 INFO L226 Difference]: Without dead ends: 753 [2020-12-22 18:02:09,168 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 18:02:09,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2020-12-22 18:02:09,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 751. [2020-12-22 18:02:09,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2020-12-22 18:02:09,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 945 transitions. [2020-12-22 18:02:09,198 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 945 transitions. Word has length 157 [2020-12-22 18:02:09,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:02:09,199 INFO L481 AbstractCegarLoop]: Abstraction has 751 states and 945 transitions. [2020-12-22 18:02:09,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:02:09,199 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 945 transitions. [2020-12-22 18:02:09,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 18:02:09,202 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:02:09,202 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 18:02:09,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 18:02:09,416 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 18:02:09,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:02:09,417 INFO L82 PathProgramCache]: Analyzing trace with hash 94293941, now seen corresponding path program 1 times [2020-12-22 18:02:09,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:02:09,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911519275] [2020-12-22 18:02:09,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:02:09,437 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:02:09,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [641109542] [2020-12-22 18:02:09,438 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 18:02:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:02:09,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 18:02:09,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:02:09,989 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 18:02:09,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911519275] [2020-12-22 18:02:09,990 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:02:09,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641109542] [2020-12-22 18:02:09,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:02:09,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 18:02:09,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444922071] [2020-12-22 18:02:09,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 18:02:09,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:02:09,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 18:02:09,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:02:09,992 INFO L87 Difference]: Start difference. First operand 751 states and 945 transitions. Second operand 5 states. [2020-12-22 18:02:10,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:02:10,186 INFO L93 Difference]: Finished difference Result 2209 states and 2786 transitions. [2020-12-22 18:02:10,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 18:02:10,186 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-12-22 18:02:10,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:02:10,194 INFO L225 Difference]: With dead ends: 2209 [2020-12-22 18:02:10,194 INFO L226 Difference]: Without dead ends: 1496 [2020-12-22 18:02:10,196 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 18:02:10,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2020-12-22 18:02:10,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 797. [2020-12-22 18:02:10,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2020-12-22 18:02:10,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 995 transitions. [2020-12-22 18:02:10,230 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 995 transitions. Word has length 157 [2020-12-22 18:02:10,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:02:10,230 INFO L481 AbstractCegarLoop]: Abstraction has 797 states and 995 transitions. [2020-12-22 18:02:10,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 18:02:10,231 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 995 transitions. [2020-12-22 18:02:10,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 18:02:10,233 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:02:10,233 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 18:02:10,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 18:02:10,447 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 18:02:10,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:02:10,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1994860229, now seen corresponding path program 1 times [2020-12-22 18:02:10,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:02:10,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874638877] [2020-12-22 18:02:10,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:02:10,470 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:02:10,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [844616687] [2020-12-22 18:02:10,474 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 18:02:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:02:10,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 18:02:10,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:02:11,029 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 18:02:11,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874638877] [2020-12-22 18:02:11,029 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:02:11,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844616687] [2020-12-22 18:02:11,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:02:11,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:02:11,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885116818] [2020-12-22 18:02:11,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:02:11,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:02:11,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:02:11,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:02:11,032 INFO L87 Difference]: Start difference. First operand 797 states and 995 transitions. Second operand 4 states. [2020-12-22 18:02:11,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:02:11,112 INFO L93 Difference]: Finished difference Result 1503 states and 1887 transitions. [2020-12-22 18:02:11,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:02:11,113 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2020-12-22 18:02:11,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:02:11,117 INFO L225 Difference]: With dead ends: 1503 [2020-12-22 18:02:11,117 INFO L226 Difference]: Without dead ends: 733 [2020-12-22 18:02:11,119 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 18:02:11,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2020-12-22 18:02:11,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 733. [2020-12-22 18:02:11,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-12-22 18:02:11,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 917 transitions. [2020-12-22 18:02:11,146 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 917 transitions. Word has length 157 [2020-12-22 18:02:11,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:02:11,147 INFO L481 AbstractCegarLoop]: Abstraction has 733 states and 917 transitions. [2020-12-22 18:02:11,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:02:11,147 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 917 transitions. [2020-12-22 18:02:11,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 18:02:11,149 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:02:11,149 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 18:02:11,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 18:02:11,363 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 18:02:11,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:02:11,365 INFO L82 PathProgramCache]: Analyzing trace with hash 639166515, now seen corresponding path program 1 times [2020-12-22 18:02:11,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:02:11,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660533599] [2020-12-22 18:02:11,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:02:11,387 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:02:11,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1570598946] [2020-12-22 18:02:11,387 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 18:02:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:02:11,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 18:02:11,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:02:11,991 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 18:02:11,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660533599] [2020-12-22 18:02:11,992 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:02:11,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570598946] [2020-12-22 18:02:11,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:02:11,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 18:02:11,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594485206] [2020-12-22 18:02:11,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 18:02:11,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:02:11,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 18:02:11,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 18:02:11,995 INFO L87 Difference]: Start difference. First operand 733 states and 917 transitions. Second operand 6 states. [2020-12-22 18:02:12,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:02:12,121 INFO L93 Difference]: Finished difference Result 1424 states and 1796 transitions. [2020-12-22 18:02:12,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 18:02:12,122 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-12-22 18:02:12,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:02:12,126 INFO L225 Difference]: With dead ends: 1424 [2020-12-22 18:02:12,126 INFO L226 Difference]: Without dead ends: 739 [2020-12-22 18:02:12,128 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 18:02:12,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-12-22 18:02:12,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 739. [2020-12-22 18:02:12,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-12-22 18:02:12,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 923 transitions. [2020-12-22 18:02:12,157 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 923 transitions. Word has length 157 [2020-12-22 18:02:12,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:02:12,157 INFO L481 AbstractCegarLoop]: Abstraction has 739 states and 923 transitions. [2020-12-22 18:02:12,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 18:02:12,158 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 923 transitions. [2020-12-22 18:02:12,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-12-22 18:02:12,160 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:02:12,160 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 18:02:12,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:02:12,387 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 18:02:12,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:02:12,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1050888114, now seen corresponding path program 2 times [2020-12-22 18:02:12,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:02:12,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544698878] [2020-12-22 18:02:12,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:02:12,408 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:02:12,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1948526783] [2020-12-22 18:02:12,409 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 18:02:12,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:02:12,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:02:12,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 18:02:12,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:02:13,030 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 18:02:13,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544698878] [2020-12-22 18:02:13,031 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:02:13,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948526783] [2020-12-22 18:02:13,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:02:13,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 18:02:13,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142154910] [2020-12-22 18:02:13,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 18:02:13,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:02:13,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 18:02:13,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 18:02:13,033 INFO L87 Difference]: Start difference. First operand 739 states and 923 transitions. Second operand 7 states. [2020-12-22 18:02:13,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:02:13,154 INFO L93 Difference]: Finished difference Result 1435 states and 1807 transitions. [2020-12-22 18:02:13,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 18:02:13,155 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 159 [2020-12-22 18:02:13,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:02:13,159 INFO L225 Difference]: With dead ends: 1435 [2020-12-22 18:02:13,160 INFO L226 Difference]: Without dead ends: 745 [2020-12-22 18:02:13,161 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 18:02:13,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2020-12-22 18:02:13,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 745. [2020-12-22 18:02:13,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 745 states. [2020-12-22 18:02:13,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 929 transitions. [2020-12-22 18:02:13,188 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 929 transitions. Word has length 159 [2020-12-22 18:02:13,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:02:13,189 INFO L481 AbstractCegarLoop]: Abstraction has 745 states and 929 transitions. [2020-12-22 18:02:13,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 18:02:13,189 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 929 transitions. [2020-12-22 18:02:13,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-12-22 18:02:13,191 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:02:13,192 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 18:02:13,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 18:02:13,405 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 18:02:13,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:02:13,405 INFO L82 PathProgramCache]: Analyzing trace with hash 770488787, now seen corresponding path program 3 times [2020-12-22 18:02:13,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:02:13,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116716225] [2020-12-22 18:02:13,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:02:13,425 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:02:13,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [944639942] [2020-12-22 18:02:13,425 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 18:02:13,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 18:02:13,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:02:13,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 18:02:13,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:02:14,002 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 18:02:14,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116716225] [2020-12-22 18:02:14,002 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:02:14,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944639942] [2020-12-22 18:02:14,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:02:14,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:02:14,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475559448] [2020-12-22 18:02:14,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:02:14,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:02:14,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:02:14,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:02:14,004 INFO L87 Difference]: Start difference. First operand 745 states and 929 transitions. Second operand 3 states. [2020-12-22 18:02:14,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:02:14,128 INFO L93 Difference]: Finished difference Result 1749 states and 2217 transitions. [2020-12-22 18:02:14,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:02:14,129 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2020-12-22 18:02:14,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:02:14,134 INFO L225 Difference]: With dead ends: 1749 [2020-12-22 18:02:14,134 INFO L226 Difference]: Without dead ends: 1063 [2020-12-22 18:02:14,136 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 18:02:14,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2020-12-22 18:02:14,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 906. [2020-12-22 18:02:14,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2020-12-22 18:02:14,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1156 transitions. [2020-12-22 18:02:14,169 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1156 transitions. Word has length 161 [2020-12-22 18:02:14,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:02:14,170 INFO L481 AbstractCegarLoop]: Abstraction has 906 states and 1156 transitions. [2020-12-22 18:02:14,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:02:14,170 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1156 transitions. [2020-12-22 18:02:14,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-12-22 18:02:14,172 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:02:14,173 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 18:02:14,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 18:02:14,389 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 18:02:14,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:02:14,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1484056676, now seen corresponding path program 1 times [2020-12-22 18:02:14,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:02:14,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278982668] [2020-12-22 18:02:14,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:02:14,412 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:02:14,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2130793214] [2020-12-22 18:02:14,412 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 18:02:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:02:14,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 18:02:14,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:02:15,154 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 18:02:15,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278982668] [2020-12-22 18:02:15,155 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:02:15,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130793214] [2020-12-22 18:02:15,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:02:15,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 18:02:15,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818337154] [2020-12-22 18:02:15,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 18:02:15,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:02:15,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 18:02:15,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 18:02:15,158 INFO L87 Difference]: Start difference. First operand 906 states and 1156 transitions. Second operand 8 states. [2020-12-22 18:02:15,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:02:15,295 INFO L93 Difference]: Finished difference Result 1770 states and 2275 transitions. [2020-12-22 18:02:15,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 18:02:15,296 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 178 [2020-12-22 18:02:15,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:02:15,300 INFO L225 Difference]: With dead ends: 1770 [2020-12-22 18:02:15,301 INFO L226 Difference]: Without dead ends: 912 [2020-12-22 18:02:15,302 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 18:02:15,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2020-12-22 18:02:15,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 912. [2020-12-22 18:02:15,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 912 states. [2020-12-22 18:02:15,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1162 transitions. [2020-12-22 18:02:15,334 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1162 transitions. Word has length 178 [2020-12-22 18:02:15,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:02:15,334 INFO L481 AbstractCegarLoop]: Abstraction has 912 states and 1162 transitions. [2020-12-22 18:02:15,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 18:02:15,334 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1162 transitions. [2020-12-22 18:02:15,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-12-22 18:02:15,337 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:02:15,337 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 18:02:15,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:02:15,552 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 18:02:15,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:02:15,553 INFO L82 PathProgramCache]: Analyzing trace with hash -453644734, now seen corresponding path program 2 times [2020-12-22 18:02:15,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:02:15,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128280813] [2020-12-22 18:02:15,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:02:15,576 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:02:15,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1331999589] [2020-12-22 18:02:15,577 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 18:02:16,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:02:16,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:02:16,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 18:02:16,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:02:16,288 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 18:02:16,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128280813] [2020-12-22 18:02:16,288 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:02:16,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331999589] [2020-12-22 18:02:16,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:02:16,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 18:02:16,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062677593] [2020-12-22 18:02:16,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 18:02:16,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:02:16,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 18:02:16,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-22 18:02:16,291 INFO L87 Difference]: Start difference. First operand 912 states and 1162 transitions. Second operand 9 states. [2020-12-22 18:02:16,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:02:16,494 INFO L93 Difference]: Finished difference Result 1781 states and 2286 transitions. [2020-12-22 18:02:16,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 18:02:16,495 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 182 [2020-12-22 18:02:16,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:02:16,500 INFO L225 Difference]: With dead ends: 1781 [2020-12-22 18:02:16,500 INFO L226 Difference]: Without dead ends: 918 [2020-12-22 18:02:16,502 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 18:02:16,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2020-12-22 18:02:16,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 918. [2020-12-22 18:02:16,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 918 states. [2020-12-22 18:02:16,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1168 transitions. [2020-12-22 18:02:16,538 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1168 transitions. Word has length 182 [2020-12-22 18:02:16,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:02:16,538 INFO L481 AbstractCegarLoop]: Abstraction has 918 states and 1168 transitions. [2020-12-22 18:02:16,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 18:02:16,538 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1168 transitions. [2020-12-22 18:02:16,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-12-22 18:02:16,541 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:02:16,541 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 18:02:16,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:02:16,756 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 18:02:16,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:02:16,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1986963428, now seen corresponding path program 3 times [2020-12-22 18:02:16,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:02:16,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272868281] [2020-12-22 18:02:16,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:02:16,780 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:02:16,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1060398275] [2020-12-22 18:02:16,781 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 18:02:17,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 18:02:17,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:02:17,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 18:02:17,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:02:17,491 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 18:02:17,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272868281] [2020-12-22 18:02:17,491 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:02:17,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060398275] [2020-12-22 18:02:17,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:02:17,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:02:17,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870974010] [2020-12-22 18:02:17,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:02:17,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:02:17,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:02:17,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:02:17,494 INFO L87 Difference]: Start difference. First operand 918 states and 1168 transitions. Second operand 4 states. [2020-12-22 18:02:18,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:02:18,828 INFO L93 Difference]: Finished difference Result 1509 states and 1921 transitions. [2020-12-22 18:02:18,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:02:18,829 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 186 [2020-12-22 18:02:18,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:02:18,833 INFO L225 Difference]: With dead ends: 1509 [2020-12-22 18:02:18,833 INFO L226 Difference]: Without dead ends: 732 [2020-12-22 18:02:18,835 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 18:02:18,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2020-12-22 18:02:18,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 732. [2020-12-22 18:02:18,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-12-22 18:02:18,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 909 transitions. [2020-12-22 18:02:18,907 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 909 transitions. Word has length 186 [2020-12-22 18:02:18,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:02:18,907 INFO L481 AbstractCegarLoop]: Abstraction has 732 states and 909 transitions. [2020-12-22 18:02:18,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:02:18,908 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 909 transitions. [2020-12-22 18:02:18,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-12-22 18:02:18,910 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:02:18,911 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 18:02:19,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:02:19,118 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 18:02:19,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:02:19,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1622468887, now seen corresponding path program 1 times [2020-12-22 18:02:19,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:02:19,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012706432] [2020-12-22 18:02:19,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:02:19,140 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:02:19,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904480022] [2020-12-22 18:02:19,141 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 18:02:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:02:19,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 18:02:19,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:02:19,868 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 18:02:19,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012706432] [2020-12-22 18:02:19,868 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:02:19,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904480022] [2020-12-22 18:02:19,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:02:19,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 18:02:19,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145814948] [2020-12-22 18:02:19,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 18:02:19,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:02:19,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 18:02:19,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-22 18:02:19,871 INFO L87 Difference]: Start difference. First operand 732 states and 909 transitions. Second operand 10 states. [2020-12-22 18:02:20,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:02:20,043 INFO L93 Difference]: Finished difference Result 1418 states and 1775 transitions. [2020-12-22 18:02:20,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 18:02:20,044 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 193 [2020-12-22 18:02:20,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:02:20,048 INFO L225 Difference]: With dead ends: 1418 [2020-12-22 18:02:20,048 INFO L226 Difference]: Without dead ends: 736 [2020-12-22 18:02:20,050 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 18:02:20,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2020-12-22 18:02:20,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 736. [2020-12-22 18:02:20,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 736 states. [2020-12-22 18:02:20,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 913 transitions. [2020-12-22 18:02:20,083 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 913 transitions. Word has length 193 [2020-12-22 18:02:20,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:02:20,083 INFO L481 AbstractCegarLoop]: Abstraction has 736 states and 913 transitions. [2020-12-22 18:02:20,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 18:02:20,084 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 913 transitions. [2020-12-22 18:02:20,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-12-22 18:02:20,087 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:02:20,087 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 18:02:20,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 18:02:20,303 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 18:02:20,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:02:20,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1336921525, now seen corresponding path program 2 times [2020-12-22 18:02:20,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:02:20,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609835166] [2020-12-22 18:02:20,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:02:20,325 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:02:20,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1535572541] [2020-12-22 18:02:20,325 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 18:02:20,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:02:20,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:02:20,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 18:02:20,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:02:21,138 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 18:02:21,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609835166] [2020-12-22 18:02:21,139 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:02:21,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535572541] [2020-12-22 18:02:21,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:02:21,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 18:02:21,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309304658] [2020-12-22 18:02:21,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 18:02:21,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:02:21,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 18:02:21,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-22 18:02:21,141 INFO L87 Difference]: Start difference. First operand 736 states and 913 transitions. Second operand 11 states. [2020-12-22 18:02:21,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:02:21,332 INFO L93 Difference]: Finished difference Result 1425 states and 1782 transitions. [2020-12-22 18:02:21,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 18:02:21,333 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 197 [2020-12-22 18:02:21,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:02:21,337 INFO L225 Difference]: With dead ends: 1425 [2020-12-22 18:02:21,337 INFO L226 Difference]: Without dead ends: 740 [2020-12-22 18:02:21,339 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 18:02:21,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2020-12-22 18:02:21,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 740. [2020-12-22 18:02:21,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 740 states. [2020-12-22 18:02:21,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 917 transitions. [2020-12-22 18:02:21,367 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 917 transitions. Word has length 197 [2020-12-22 18:02:21,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:02:21,368 INFO L481 AbstractCegarLoop]: Abstraction has 740 states and 917 transitions. [2020-12-22 18:02:21,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 18:02:21,368 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 917 transitions. [2020-12-22 18:02:21,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-12-22 18:02:21,369 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:02:21,370 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 18:02:21,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-22 18:02:21,584 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 18:02:21,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:02:21,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1628837737, now seen corresponding path program 3 times [2020-12-22 18:02:21,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:02:21,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525776924] [2020-12-22 18:02:21,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:02:21,604 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:02:21,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1033400260] [2020-12-22 18:02:21,605 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