/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/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:16:31,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:16:31,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:16:31,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 07:16:31,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 07:16:31,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 07:16:31,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 07:16:31,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 07:16:31,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 07:16:31,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 07:16:31,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 07:16:31,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 07:16:31,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 07:16:31,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 07:16:31,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 07:16:31,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 07:16:31,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 07:16:31,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 07:16:31,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 07:16:31,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 07:16:31,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 07:16:31,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 07:16:31,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 07:16:31,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 07:16:31,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 07:16:31,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:16:31,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:16:31,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:16:31,293 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:16:31,339 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:16:31,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:16:31,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:16:31,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:16:31,344 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:16:31,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:16:31,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:16:31,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:16:31,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:16:31,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:16:31,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:16:31,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:16:31,347 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:16:31,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:16:31,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:16:31,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:16:31,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:16:31,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:16:31,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:16:31,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:16:31,349 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:16:31,349 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:16:31,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:16:31,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:16:31,350 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:16:31,350 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:16:31,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:16:31,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:16:31,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:16:31,802 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:16:31,803 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:16:31,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2020-12-22 07:16:31,897 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56d0899aa/4ed1186ffb664f698c63c92e45b95592/FLAG52b8bc2a6 [2020-12-22 07:16:32,684 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:16:32,684 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2020-12-22 07:16:32,696 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56d0899aa/4ed1186ffb664f698c63c92e45b95592/FLAG52b8bc2a6 [2020-12-22 07:16:33,012 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56d0899aa/4ed1186ffb664f698c63c92e45b95592 [2020-12-22 07:16:33,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:16:33,018 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:16:33,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:16:33,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:16:33,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:16:33,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:16:33" (1/1) ... [2020-12-22 07:16:33,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22a0aed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:33, skipping insertion in model container [2020-12-22 07:16:33,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:16:33" (1/1) ... [2020-12-22 07:16:33,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:16:33,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:16:33,404 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/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c[14698,14711] [2020-12-22 07:16:33,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:16:33,429 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:16:33,494 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/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c[14698,14711] [2020-12-22 07:16:33,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:16:33,518 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:16:33,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:33 WrapperNode [2020-12-22 07:16:33,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:16:33,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:16:33,521 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:16:33,521 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:16:33,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:33" (1/1) ... [2020-12-22 07:16:33,545 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:33" (1/1) ... [2020-12-22 07:16:33,673 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:16:33,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:16:33,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:16:33,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:16:33,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:33" (1/1) ... [2020-12-22 07:16:33,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:33" (1/1) ... [2020-12-22 07:16:33,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:33" (1/1) ... [2020-12-22 07:16:33,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:33" (1/1) ... [2020-12-22 07:16:33,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:33" (1/1) ... [2020-12-22 07:16:33,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:33" (1/1) ... [2020-12-22 07:16:33,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:33" (1/1) ... [2020-12-22 07:16:33,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:16:33,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:16:33,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:16:33,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:16:33,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:33" (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 07:16:33,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:16:33,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:16:33,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:16:33,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:16:35,128 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:16:35,129 INFO L299 CfgBuilder]: Removed 123 assume(true) statements. [2020-12-22 07:16:35,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:16:35 BoogieIcfgContainer [2020-12-22 07:16:35,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:16:35,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:16:35,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:16:35,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:16:35,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:16:33" (1/3) ... [2020-12-22 07:16:35,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69dade25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:16:35, skipping insertion in model container [2020-12-22 07:16:35,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:33" (2/3) ... [2020-12-22 07:16:35,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69dade25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:16:35, skipping insertion in model container [2020-12-22 07:16:35,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:16:35" (3/3) ... [2020-12-22 07:16:35,140 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2020-12-22 07:16:35,147 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:16:35,153 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 23 error locations. [2020-12-22 07:16:35,178 INFO L253 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2020-12-22 07:16:35,215 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:16:35,215 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:16:35,216 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:16:35,216 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:16:35,216 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:16:35,217 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:16:35,217 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:16:35,217 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:16:35,261 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states. [2020-12-22 07:16:35,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 07:16:35,271 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:35,272 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] [2020-12-22 07:16:35,273 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:35,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:35,283 INFO L82 PathProgramCache]: Analyzing trace with hash 349506240, now seen corresponding path program 1 times [2020-12-22 07:16:35,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:35,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73715939] [2020-12-22 07:16:35,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:35,623 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 07:16:35,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73715939] [2020-12-22 07:16:35,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:35,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:16:35,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719890653] [2020-12-22 07:16:35,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 07:16:35,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:35,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 07:16:35,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:16:35,664 INFO L87 Difference]: Start difference. First operand 297 states. Second operand 2 states. [2020-12-22 07:16:35,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:35,763 INFO L93 Difference]: Finished difference Result 578 states and 901 transitions. [2020-12-22 07:16:35,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 07:16:35,765 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 33 [2020-12-22 07:16:35,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:35,781 INFO L225 Difference]: With dead ends: 578 [2020-12-22 07:16:35,781 INFO L226 Difference]: Without dead ends: 293 [2020-12-22 07:16:35,786 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 07:16:35,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-12-22 07:16:35,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2020-12-22 07:16:35,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-12-22 07:16:35,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 429 transitions. [2020-12-22 07:16:35,853 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 429 transitions. Word has length 33 [2020-12-22 07:16:35,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:35,854 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 429 transitions. [2020-12-22 07:16:35,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 07:16:35,854 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 429 transitions. [2020-12-22 07:16:35,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 07:16:35,856 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:35,857 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] [2020-12-22 07:16:35,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:16:35,858 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:35,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:35,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1047215368, now seen corresponding path program 1 times [2020-12-22 07:16:35,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:35,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621826481] [2020-12-22 07:16:35,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:35,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:36,022 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 07:16:36,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621826481] [2020-12-22 07:16:36,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:36,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:36,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389880365] [2020-12-22 07:16:36,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:16:36,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:36,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:16:36,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:16:36,030 INFO L87 Difference]: Start difference. First operand 293 states and 429 transitions. Second operand 4 states. [2020-12-22 07:16:36,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:36,110 INFO L93 Difference]: Finished difference Result 572 states and 832 transitions. [2020-12-22 07:16:36,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:16:36,111 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-12-22 07:16:36,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:36,117 INFO L225 Difference]: With dead ends: 572 [2020-12-22 07:16:36,117 INFO L226 Difference]: Without dead ends: 293 [2020-12-22 07:16:36,124 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 07:16:36,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-12-22 07:16:36,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2020-12-22 07:16:36,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-12-22 07:16:36,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 417 transitions. [2020-12-22 07:16:36,173 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 417 transitions. Word has length 33 [2020-12-22 07:16:36,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:36,173 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 417 transitions. [2020-12-22 07:16:36,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:16:36,174 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 417 transitions. [2020-12-22 07:16:36,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 07:16:36,176 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:36,176 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 07:16:36,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:16:36,178 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:36,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:36,179 INFO L82 PathProgramCache]: Analyzing trace with hash -600938825, now seen corresponding path program 1 times [2020-12-22 07:16:36,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:36,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279594893] [2020-12-22 07:16:36,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:36,464 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 07:16:36,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279594893] [2020-12-22 07:16:36,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:36,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:36,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365083225] [2020-12-22 07:16:36,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:36,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:36,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:36,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:36,474 INFO L87 Difference]: Start difference. First operand 293 states and 417 transitions. Second operand 3 states. [2020-12-22 07:16:36,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:36,569 INFO L93 Difference]: Finished difference Result 603 states and 867 transitions. [2020-12-22 07:16:36,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:36,570 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-22 07:16:36,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:36,574 INFO L225 Difference]: With dead ends: 603 [2020-12-22 07:16:36,574 INFO L226 Difference]: Without dead ends: 327 [2020-12-22 07:16:36,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 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 07:16:36,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-12-22 07:16:36,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 269. [2020-12-22 07:16:36,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-12-22 07:16:36,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 381 transitions. [2020-12-22 07:16:36,614 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 381 transitions. Word has length 44 [2020-12-22 07:16:36,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:36,615 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 381 transitions. [2020-12-22 07:16:36,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:36,615 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 381 transitions. [2020-12-22 07:16:36,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 07:16:36,619 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:36,619 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:36,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 07:16:36,619 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:36,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:36,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1585020226, now seen corresponding path program 1 times [2020-12-22 07:16:36,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:36,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264331182] [2020-12-22 07:16:36,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:36,761 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 07:16:36,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264331182] [2020-12-22 07:16:36,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:36,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:36,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106690569] [2020-12-22 07:16:36,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:36,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:36,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:36,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:36,764 INFO L87 Difference]: Start difference. First operand 269 states and 381 transitions. Second operand 3 states. [2020-12-22 07:16:36,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:36,801 INFO L93 Difference]: Finished difference Result 750 states and 1074 transitions. [2020-12-22 07:16:36,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:36,802 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-22 07:16:36,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:36,805 INFO L225 Difference]: With dead ends: 750 [2020-12-22 07:16:36,805 INFO L226 Difference]: Without dead ends: 498 [2020-12-22 07:16:36,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 07:16:36,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2020-12-22 07:16:36,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 304. [2020-12-22 07:16:36,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-12-22 07:16:36,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 433 transitions. [2020-12-22 07:16:36,822 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 433 transitions. Word has length 53 [2020-12-22 07:16:36,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:36,823 INFO L481 AbstractCegarLoop]: Abstraction has 304 states and 433 transitions. [2020-12-22 07:16:36,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:36,823 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 433 transitions. [2020-12-22 07:16:36,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 07:16:36,825 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:36,825 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:36,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:16:36,826 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:36,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:36,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1396202520, now seen corresponding path program 1 times [2020-12-22 07:16:36,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:36,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120246574] [2020-12-22 07:16:36,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:36,936 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 07:16:36,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120246574] [2020-12-22 07:16:36,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:36,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:36,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811491080] [2020-12-22 07:16:36,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:36,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:36,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:36,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:36,940 INFO L87 Difference]: Start difference. First operand 304 states and 433 transitions. Second operand 3 states. [2020-12-22 07:16:36,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:36,985 INFO L93 Difference]: Finished difference Result 834 states and 1199 transitions. [2020-12-22 07:16:36,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:36,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-22 07:16:36,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:36,991 INFO L225 Difference]: With dead ends: 834 [2020-12-22 07:16:36,991 INFO L226 Difference]: Without dead ends: 547 [2020-12-22 07:16:36,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 07:16:36,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2020-12-22 07:16:37,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 329. [2020-12-22 07:16:37,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-12-22 07:16:37,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 471 transitions. [2020-12-22 07:16:37,012 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 471 transitions. Word has length 54 [2020-12-22 07:16:37,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:37,013 INFO L481 AbstractCegarLoop]: Abstraction has 329 states and 471 transitions. [2020-12-22 07:16:37,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:37,013 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 471 transitions. [2020-12-22 07:16:37,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 07:16:37,020 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:37,020 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:37,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 07:16:37,021 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:37,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:37,022 INFO L82 PathProgramCache]: Analyzing trace with hash -716144150, now seen corresponding path program 1 times [2020-12-22 07:16:37,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:37,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229472205] [2020-12-22 07:16:37,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:37,160 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 07:16:37,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229472205] [2020-12-22 07:16:37,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:37,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:37,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617360996] [2020-12-22 07:16:37,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:16:37,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:37,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:16:37,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:16:37,164 INFO L87 Difference]: Start difference. First operand 329 states and 471 transitions. Second operand 5 states. [2020-12-22 07:16:37,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:37,402 INFO L93 Difference]: Finished difference Result 1023 states and 1476 transitions. [2020-12-22 07:16:37,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:16:37,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-12-22 07:16:37,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:37,409 INFO L225 Difference]: With dead ends: 1023 [2020-12-22 07:16:37,409 INFO L226 Difference]: Without dead ends: 711 [2020-12-22 07:16:37,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:16:37,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-12-22 07:16:37,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 427. [2020-12-22 07:16:37,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-12-22 07:16:37,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 608 transitions. [2020-12-22 07:16:37,434 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 608 transitions. Word has length 54 [2020-12-22 07:16:37,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:37,434 INFO L481 AbstractCegarLoop]: Abstraction has 427 states and 608 transitions. [2020-12-22 07:16:37,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:16:37,435 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 608 transitions. [2020-12-22 07:16:37,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 07:16:37,436 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:37,436 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:37,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 07:16:37,437 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:37,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:37,439 INFO L82 PathProgramCache]: Analyzing trace with hash 153208358, now seen corresponding path program 1 times [2020-12-22 07:16:37,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:37,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448250485] [2020-12-22 07:16:37,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:37,556 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 07:16:37,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448250485] [2020-12-22 07:16:37,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:37,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:37,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55612302] [2020-12-22 07:16:37,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:16:37,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:37,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:16:37,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:16:37,563 INFO L87 Difference]: Start difference. First operand 427 states and 608 transitions. Second operand 5 states. [2020-12-22 07:16:37,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:37,802 INFO L93 Difference]: Finished difference Result 1027 states and 1476 transitions. [2020-12-22 07:16:37,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:16:37,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-12-22 07:16:37,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:37,808 INFO L225 Difference]: With dead ends: 1027 [2020-12-22 07:16:37,808 INFO L226 Difference]: Without dead ends: 715 [2020-12-22 07:16:37,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:16:37,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2020-12-22 07:16:37,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 435. [2020-12-22 07:16:37,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-12-22 07:16:37,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 616 transitions. [2020-12-22 07:16:37,837 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 616 transitions. Word has length 55 [2020-12-22 07:16:37,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:37,838 INFO L481 AbstractCegarLoop]: Abstraction has 435 states and 616 transitions. [2020-12-22 07:16:37,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:16:37,838 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 616 transitions. [2020-12-22 07:16:37,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 07:16:37,840 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:37,840 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:37,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 07:16:37,841 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:37,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:37,843 INFO L82 PathProgramCache]: Analyzing trace with hash -748848364, now seen corresponding path program 1 times [2020-12-22 07:16:37,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:37,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295655708] [2020-12-22 07:16:37,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:37,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:37,973 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 07:16:37,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295655708] [2020-12-22 07:16:37,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:37,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:37,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035602015] [2020-12-22 07:16:37,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:16:37,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:37,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:16:37,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:16:37,978 INFO L87 Difference]: Start difference. First operand 435 states and 616 transitions. Second operand 4 states. [2020-12-22 07:16:38,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:38,197 INFO L93 Difference]: Finished difference Result 1027 states and 1468 transitions. [2020-12-22 07:16:38,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:16:38,198 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-12-22 07:16:38,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:38,203 INFO L225 Difference]: With dead ends: 1027 [2020-12-22 07:16:38,203 INFO L226 Difference]: Without dead ends: 715 [2020-12-22 07:16:38,205 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 07:16:38,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2020-12-22 07:16:38,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 435. [2020-12-22 07:16:38,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-12-22 07:16:38,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 612 transitions. [2020-12-22 07:16:38,232 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 612 transitions. Word has length 57 [2020-12-22 07:16:38,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:38,234 INFO L481 AbstractCegarLoop]: Abstraction has 435 states and 612 transitions. [2020-12-22 07:16:38,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:16:38,234 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 612 transitions. [2020-12-22 07:16:38,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 07:16:38,235 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:38,235 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:38,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 07:16:38,236 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:38,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:38,237 INFO L82 PathProgramCache]: Analyzing trace with hash 2035065116, now seen corresponding path program 1 times [2020-12-22 07:16:38,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:38,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888114313] [2020-12-22 07:16:38,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:38,359 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 07:16:38,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888114313] [2020-12-22 07:16:38,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:38,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:38,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173787262] [2020-12-22 07:16:38,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:38,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:38,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:38,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:38,367 INFO L87 Difference]: Start difference. First operand 435 states and 612 transitions. Second operand 3 states. [2020-12-22 07:16:38,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:38,428 INFO L93 Difference]: Finished difference Result 875 states and 1255 transitions. [2020-12-22 07:16:38,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:38,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2020-12-22 07:16:38,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:38,432 INFO L225 Difference]: With dead ends: 875 [2020-12-22 07:16:38,432 INFO L226 Difference]: Without dead ends: 563 [2020-12-22 07:16:38,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 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 07:16:38,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-12-22 07:16:38,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 430. [2020-12-22 07:16:38,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-12-22 07:16:38,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 604 transitions. [2020-12-22 07:16:38,458 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 604 transitions. Word has length 58 [2020-12-22 07:16:38,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:38,458 INFO L481 AbstractCegarLoop]: Abstraction has 430 states and 604 transitions. [2020-12-22 07:16:38,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:38,459 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 604 transitions. [2020-12-22 07:16:38,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 07:16:38,459 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:38,459 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:38,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 07:16:38,460 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:38,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:38,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1833641356, now seen corresponding path program 1 times [2020-12-22 07:16:38,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:38,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727219356] [2020-12-22 07:16:38,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:38,536 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 07:16:38,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727219356] [2020-12-22 07:16:38,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:38,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:38,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306554081] [2020-12-22 07:16:38,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:38,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:38,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:38,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:38,542 INFO L87 Difference]: Start difference. First operand 430 states and 604 transitions. Second operand 3 states. [2020-12-22 07:16:38,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:38,630 INFO L93 Difference]: Finished difference Result 874 states and 1254 transitions. [2020-12-22 07:16:38,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:38,633 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-22 07:16:38,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:38,636 INFO L225 Difference]: With dead ends: 874 [2020-12-22 07:16:38,636 INFO L226 Difference]: Without dead ends: 567 [2020-12-22 07:16:38,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 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 07:16:38,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2020-12-22 07:16:38,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 410. [2020-12-22 07:16:38,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2020-12-22 07:16:38,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 572 transitions. [2020-12-22 07:16:38,663 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 572 transitions. Word has length 62 [2020-12-22 07:16:38,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:38,663 INFO L481 AbstractCegarLoop]: Abstraction has 410 states and 572 transitions. [2020-12-22 07:16:38,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:38,663 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 572 transitions. [2020-12-22 07:16:38,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 07:16:38,664 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:38,664 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, 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 07:16:38,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 07:16:38,665 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:38,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:38,665 INFO L82 PathProgramCache]: Analyzing trace with hash -532758708, now seen corresponding path program 1 times [2020-12-22 07:16:38,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:38,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875735135] [2020-12-22 07:16:38,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:38,740 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 07:16:38,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875735135] [2020-12-22 07:16:38,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:38,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:38,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197091205] [2020-12-22 07:16:38,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:38,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:38,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:38,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:38,743 INFO L87 Difference]: Start difference. First operand 410 states and 572 transitions. Second operand 3 states. [2020-12-22 07:16:38,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:38,815 INFO L93 Difference]: Finished difference Result 842 states and 1198 transitions. [2020-12-22 07:16:38,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:38,815 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 07:16:38,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:38,819 INFO L225 Difference]: With dead ends: 842 [2020-12-22 07:16:38,819 INFO L226 Difference]: Without dead ends: 555 [2020-12-22 07:16:38,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 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 07:16:38,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-12-22 07:16:38,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 398. [2020-12-22 07:16:38,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-12-22 07:16:38,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 554 transitions. [2020-12-22 07:16:38,855 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 554 transitions. Word has length 66 [2020-12-22 07:16:38,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:38,855 INFO L481 AbstractCegarLoop]: Abstraction has 398 states and 554 transitions. [2020-12-22 07:16:38,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:38,856 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 554 transitions. [2020-12-22 07:16:38,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 07:16:38,862 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:38,862 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, 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 07:16:38,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 07:16:38,864 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:38,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:38,865 INFO L82 PathProgramCache]: Analyzing trace with hash 949999250, now seen corresponding path program 1 times [2020-12-22 07:16:38,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:38,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281454397] [2020-12-22 07:16:38,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:39,000 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 07:16:39,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281454397] [2020-12-22 07:16:39,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:39,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:16:39,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401850931] [2020-12-22 07:16:39,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:39,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:39,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:39,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:16:39,003 INFO L87 Difference]: Start difference. First operand 398 states and 554 transitions. Second operand 6 states. [2020-12-22 07:16:39,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:39,221 INFO L93 Difference]: Finished difference Result 1460 states and 2069 transitions. [2020-12-22 07:16:39,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:16:39,221 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-22 07:16:39,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:39,228 INFO L225 Difference]: With dead ends: 1460 [2020-12-22 07:16:39,228 INFO L226 Difference]: Without dead ends: 1185 [2020-12-22 07:16:39,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:16:39,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2020-12-22 07:16:39,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 419. [2020-12-22 07:16:39,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-12-22 07:16:39,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 578 transitions. [2020-12-22 07:16:39,270 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 578 transitions. Word has length 67 [2020-12-22 07:16:39,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:39,270 INFO L481 AbstractCegarLoop]: Abstraction has 419 states and 578 transitions. [2020-12-22 07:16:39,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:39,270 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 578 transitions. [2020-12-22 07:16:39,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 07:16:39,274 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:39,274 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, 1, 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 07:16:39,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 07:16:39,275 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:39,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:39,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1947699729, now seen corresponding path program 1 times [2020-12-22 07:16:39,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:39,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208366080] [2020-12-22 07:16:39,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:39,351 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 07:16:39,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208366080] [2020-12-22 07:16:39,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:39,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:39,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140678907] [2020-12-22 07:16:39,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:39,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:39,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:39,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:39,353 INFO L87 Difference]: Start difference. First operand 419 states and 578 transitions. Second operand 3 states. [2020-12-22 07:16:39,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:39,450 INFO L93 Difference]: Finished difference Result 859 states and 1214 transitions. [2020-12-22 07:16:39,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:39,450 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 07:16:39,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:39,454 INFO L225 Difference]: With dead ends: 859 [2020-12-22 07:16:39,454 INFO L226 Difference]: Without dead ends: 584 [2020-12-22 07:16:39,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 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 07:16:39,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2020-12-22 07:16:39,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 399. [2020-12-22 07:16:39,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2020-12-22 07:16:39,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 546 transitions. [2020-12-22 07:16:39,493 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 546 transitions. Word has length 69 [2020-12-22 07:16:39,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:39,493 INFO L481 AbstractCegarLoop]: Abstraction has 399 states and 546 transitions. [2020-12-22 07:16:39,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:39,494 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 546 transitions. [2020-12-22 07:16:39,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 07:16:39,495 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:39,495 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, 1, 1, 1, 1, 1, 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 07:16:39,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 07:16:39,496 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:39,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:39,497 INFO L82 PathProgramCache]: Analyzing trace with hash -344815767, now seen corresponding path program 1 times [2020-12-22 07:16:39,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:39,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944511162] [2020-12-22 07:16:39,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:39,559 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 07:16:39,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944511162] [2020-12-22 07:16:39,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:39,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:39,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009653417] [2020-12-22 07:16:39,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:39,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:39,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:39,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:39,561 INFO L87 Difference]: Start difference. First operand 399 states and 546 transitions. Second operand 3 states. [2020-12-22 07:16:39,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:39,658 INFO L93 Difference]: Finished difference Result 827 states and 1158 transitions. [2020-12-22 07:16:39,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:39,659 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 07:16:39,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:39,662 INFO L225 Difference]: With dead ends: 827 [2020-12-22 07:16:39,662 INFO L226 Difference]: Without dead ends: 572 [2020-12-22 07:16:39,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 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 07:16:39,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-12-22 07:16:39,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 387. [2020-12-22 07:16:39,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-12-22 07:16:39,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 528 transitions. [2020-12-22 07:16:39,696 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 528 transitions. Word has length 73 [2020-12-22 07:16:39,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:39,696 INFO L481 AbstractCegarLoop]: Abstraction has 387 states and 528 transitions. [2020-12-22 07:16:39,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:39,697 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 528 transitions. [2020-12-22 07:16:39,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 07:16:39,698 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:39,698 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:16:39,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 07:16:39,698 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:39,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:39,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1959055909, now seen corresponding path program 1 times [2020-12-22 07:16:39,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:39,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100911955] [2020-12-22 07:16:39,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:39,898 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 07:16:39,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100911955] [2020-12-22 07:16:39,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:39,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:16:39,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904847127] [2020-12-22 07:16:39,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:39,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:39,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:39,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:16:39,901 INFO L87 Difference]: Start difference. First operand 387 states and 528 transitions. Second operand 6 states. [2020-12-22 07:16:40,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:40,134 INFO L93 Difference]: Finished difference Result 1103 states and 1542 transitions. [2020-12-22 07:16:40,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:16:40,134 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-12-22 07:16:40,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:40,139 INFO L225 Difference]: With dead ends: 1103 [2020-12-22 07:16:40,139 INFO L226 Difference]: Without dead ends: 860 [2020-12-22 07:16:40,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:16:40,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2020-12-22 07:16:40,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 412. [2020-12-22 07:16:40,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-12-22 07:16:40,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 563 transitions. [2020-12-22 07:16:40,184 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 563 transitions. Word has length 76 [2020-12-22 07:16:40,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:40,184 INFO L481 AbstractCegarLoop]: Abstraction has 412 states and 563 transitions. [2020-12-22 07:16:40,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:40,185 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 563 transitions. [2020-12-22 07:16:40,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 07:16:40,186 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:40,186 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:16:40,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 07:16:40,186 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:40,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:40,187 INFO L82 PathProgramCache]: Analyzing trace with hash 317146558, now seen corresponding path program 1 times [2020-12-22 07:16:40,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:40,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288654958] [2020-12-22 07:16:40,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:40,339 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 07:16:40,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288654958] [2020-12-22 07:16:40,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:40,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:16:40,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863625676] [2020-12-22 07:16:40,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:16:40,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:40,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:16:40,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:16:40,341 INFO L87 Difference]: Start difference. First operand 412 states and 563 transitions. Second operand 7 states. [2020-12-22 07:16:40,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:40,747 INFO L93 Difference]: Finished difference Result 1432 states and 1991 transitions. [2020-12-22 07:16:40,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:16:40,748 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 76 [2020-12-22 07:16:40,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:40,753 INFO L225 Difference]: With dead ends: 1432 [2020-12-22 07:16:40,754 INFO L226 Difference]: Without dead ends: 1171 [2020-12-22 07:16:40,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:16:40,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2020-12-22 07:16:40,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 440. [2020-12-22 07:16:40,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2020-12-22 07:16:40,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 594 transitions. [2020-12-22 07:16:40,800 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 594 transitions. Word has length 76 [2020-12-22 07:16:40,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:40,800 INFO L481 AbstractCegarLoop]: Abstraction has 440 states and 594 transitions. [2020-12-22 07:16:40,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:16:40,800 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 594 transitions. [2020-12-22 07:16:40,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 07:16:40,801 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:40,802 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:16:40,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 07:16:40,802 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:40,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:40,803 INFO L82 PathProgramCache]: Analyzing trace with hash 917353494, now seen corresponding path program 1 times [2020-12-22 07:16:40,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:40,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370723156] [2020-12-22 07:16:40,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:40,862 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 07:16:40,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370723156] [2020-12-22 07:16:40,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:40,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:40,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774904704] [2020-12-22 07:16:40,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:16:40,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:40,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:16:40,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:16:40,865 INFO L87 Difference]: Start difference. First operand 440 states and 594 transitions. Second operand 4 states. [2020-12-22 07:16:41,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:41,032 INFO L93 Difference]: Finished difference Result 1131 states and 1543 transitions. [2020-12-22 07:16:41,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:16:41,032 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-12-22 07:16:41,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:41,037 INFO L225 Difference]: With dead ends: 1131 [2020-12-22 07:16:41,037 INFO L226 Difference]: Without dead ends: 864 [2020-12-22 07:16:41,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 07:16:41,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2020-12-22 07:16:41,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 661. [2020-12-22 07:16:41,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 661 states. [2020-12-22 07:16:41,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 882 transitions. [2020-12-22 07:16:41,114 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 882 transitions. Word has length 76 [2020-12-22 07:16:41,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:41,115 INFO L481 AbstractCegarLoop]: Abstraction has 661 states and 882 transitions. [2020-12-22 07:16:41,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:16:41,115 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 882 transitions. [2020-12-22 07:16:41,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 07:16:41,116 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:41,116 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:16:41,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 07:16:41,117 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:41,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:41,118 INFO L82 PathProgramCache]: Analyzing trace with hash 956639496, now seen corresponding path program 1 times [2020-12-22 07:16:41,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:41,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426876421] [2020-12-22 07:16:41,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:41,201 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 07:16:41,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426876421] [2020-12-22 07:16:41,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:41,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:41,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112820530] [2020-12-22 07:16:41,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:41,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:41,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:41,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:41,208 INFO L87 Difference]: Start difference. First operand 661 states and 882 transitions. Second operand 3 states. [2020-12-22 07:16:41,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:41,306 INFO L93 Difference]: Finished difference Result 1154 states and 1574 transitions. [2020-12-22 07:16:41,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:41,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 07:16:41,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:41,311 INFO L225 Difference]: With dead ends: 1154 [2020-12-22 07:16:41,311 INFO L226 Difference]: Without dead ends: 772 [2020-12-22 07:16:41,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 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 07:16:41,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2020-12-22 07:16:41,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 657. [2020-12-22 07:16:41,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2020-12-22 07:16:41,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 875 transitions. [2020-12-22 07:16:41,386 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 875 transitions. Word has length 77 [2020-12-22 07:16:41,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:41,387 INFO L481 AbstractCegarLoop]: Abstraction has 657 states and 875 transitions. [2020-12-22 07:16:41,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:41,387 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 875 transitions. [2020-12-22 07:16:41,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 07:16:41,388 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:41,389 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:16:41,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 07:16:41,389 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:41,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:41,390 INFO L82 PathProgramCache]: Analyzing trace with hash 341178161, now seen corresponding path program 1 times [2020-12-22 07:16:41,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:41,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667077005] [2020-12-22 07:16:41,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:41,486 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 07:16:41,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667077005] [2020-12-22 07:16:41,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:41,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:41,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111884190] [2020-12-22 07:16:41,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:16:41,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:41,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:16:41,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:16:41,490 INFO L87 Difference]: Start difference. First operand 657 states and 875 transitions. Second operand 4 states. [2020-12-22 07:16:41,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:41,710 INFO L93 Difference]: Finished difference Result 1469 states and 1979 transitions. [2020-12-22 07:16:41,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:16:41,711 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-12-22 07:16:41,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:41,716 INFO L225 Difference]: With dead ends: 1469 [2020-12-22 07:16:41,716 INFO L226 Difference]: Without dead ends: 1077 [2020-12-22 07:16:41,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 07:16:41,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2020-12-22 07:16:41,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 876. [2020-12-22 07:16:41,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 876 states. [2020-12-22 07:16:41,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1157 transitions. [2020-12-22 07:16:41,825 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1157 transitions. Word has length 78 [2020-12-22 07:16:41,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:41,825 INFO L481 AbstractCegarLoop]: Abstraction has 876 states and 1157 transitions. [2020-12-22 07:16:41,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:16:41,826 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1157 transitions. [2020-12-22 07:16:41,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 07:16:41,827 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:41,828 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:16:41,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 07:16:41,828 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:41,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:41,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1360037685, now seen corresponding path program 1 times [2020-12-22 07:16:41,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:41,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894022612] [2020-12-22 07:16:41,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:41,955 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 07:16:41,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894022612] [2020-12-22 07:16:41,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:41,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:16:41,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373291821] [2020-12-22 07:16:41,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:41,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:41,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:41,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:16:41,958 INFO L87 Difference]: Start difference. First operand 876 states and 1157 transitions. Second operand 6 states. [2020-12-22 07:16:42,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:42,559 INFO L93 Difference]: Finished difference Result 3260 states and 4377 transitions. [2020-12-22 07:16:42,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:16:42,560 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-22 07:16:42,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:42,573 INFO L225 Difference]: With dead ends: 3260 [2020-12-22 07:16:42,573 INFO L226 Difference]: Without dead ends: 2737 [2020-12-22 07:16:42,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:16:42,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2020-12-22 07:16:42,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 1002. [2020-12-22 07:16:42,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-12-22 07:16:42,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1304 transitions. [2020-12-22 07:16:42,690 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1304 transitions. Word has length 78 [2020-12-22 07:16:42,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:42,691 INFO L481 AbstractCegarLoop]: Abstraction has 1002 states and 1304 transitions. [2020-12-22 07:16:42,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:42,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1304 transitions. [2020-12-22 07:16:42,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 07:16:42,692 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:42,693 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:16:42,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 07:16:42,693 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:42,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:42,694 INFO L82 PathProgramCache]: Analyzing trace with hash -504696615, now seen corresponding path program 1 times [2020-12-22 07:16:42,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:42,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545176305] [2020-12-22 07:16:42,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:42,751 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 07:16:42,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545176305] [2020-12-22 07:16:42,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:42,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:42,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701802969] [2020-12-22 07:16:42,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:16:42,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:42,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:16:42,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:16:42,754 INFO L87 Difference]: Start difference. First operand 1002 states and 1304 transitions. Second operand 4 states. [2020-12-22 07:16:43,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:43,101 INFO L93 Difference]: Finished difference Result 2409 states and 3182 transitions. [2020-12-22 07:16:43,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:16:43,102 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-12-22 07:16:43,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:43,113 INFO L225 Difference]: With dead ends: 2409 [2020-12-22 07:16:43,113 INFO L226 Difference]: Without dead ends: 1838 [2020-12-22 07:16:43,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 07:16:43,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2020-12-22 07:16:43,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1357. [2020-12-22 07:16:43,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1357 states. [2020-12-22 07:16:43,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 1761 transitions. [2020-12-22 07:16:43,294 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 1761 transitions. Word has length 79 [2020-12-22 07:16:43,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:43,295 INFO L481 AbstractCegarLoop]: Abstraction has 1357 states and 1761 transitions. [2020-12-22 07:16:43,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:16:43,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 1761 transitions. [2020-12-22 07:16:43,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 07:16:43,297 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:43,298 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:16:43,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 07:16:43,298 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:43,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:43,299 INFO L82 PathProgramCache]: Analyzing trace with hash -676572605, now seen corresponding path program 1 times [2020-12-22 07:16:43,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:43,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601154473] [2020-12-22 07:16:43,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:43,342 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 07:16:43,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601154473] [2020-12-22 07:16:43,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:43,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:43,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736376887] [2020-12-22 07:16:43,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:43,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:43,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:43,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:43,344 INFO L87 Difference]: Start difference. First operand 1357 states and 1761 transitions. Second operand 3 states. [2020-12-22 07:16:43,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:43,707 INFO L93 Difference]: Finished difference Result 3205 states and 4182 transitions. [2020-12-22 07:16:43,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:43,708 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 07:16:43,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:43,719 INFO L225 Difference]: With dead ends: 3205 [2020-12-22 07:16:43,719 INFO L226 Difference]: Without dead ends: 2226 [2020-12-22 07:16:43,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 07:16:43,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2226 states. [2020-12-22 07:16:43,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2226 to 1359. [2020-12-22 07:16:43,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1359 states. [2020-12-22 07:16:43,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1763 transitions. [2020-12-22 07:16:43,878 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1763 transitions. Word has length 80 [2020-12-22 07:16:43,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:43,878 INFO L481 AbstractCegarLoop]: Abstraction has 1359 states and 1763 transitions. [2020-12-22 07:16:43,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:43,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1763 transitions. [2020-12-22 07:16:43,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 07:16:43,880 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:43,881 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:16:43,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 07:16:43,881 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:43,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:43,882 INFO L82 PathProgramCache]: Analyzing trace with hash 614216993, now seen corresponding path program 1 times [2020-12-22 07:16:43,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:43,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622066394] [2020-12-22 07:16:43,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:43,975 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 07:16:43,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622066394] [2020-12-22 07:16:43,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:43,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:16:43,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431609532] [2020-12-22 07:16:43,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:43,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:43,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:43,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:16:43,978 INFO L87 Difference]: Start difference. First operand 1359 states and 1763 transitions. Second operand 6 states. [2020-12-22 07:16:44,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:44,494 INFO L93 Difference]: Finished difference Result 2147 states and 2830 transitions. [2020-12-22 07:16:44,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 07:16:44,496 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-12-22 07:16:44,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:44,511 INFO L225 Difference]: With dead ends: 2147 [2020-12-22 07:16:44,511 INFO L226 Difference]: Without dead ends: 2145 [2020-12-22 07:16:44,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:16:44,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2145 states. [2020-12-22 07:16:44,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2145 to 1361. [2020-12-22 07:16:44,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1361 states. [2020-12-22 07:16:44,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1765 transitions. [2020-12-22 07:16:44,781 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1765 transitions. Word has length 81 [2020-12-22 07:16:44,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:44,782 INFO L481 AbstractCegarLoop]: Abstraction has 1361 states and 1765 transitions. [2020-12-22 07:16:44,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:44,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1765 transitions. [2020-12-22 07:16:44,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 07:16:44,785 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:44,786 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:16:44,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 07:16:44,786 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:44,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:44,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1500088230, now seen corresponding path program 1 times [2020-12-22 07:16:44,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:44,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193247764] [2020-12-22 07:16:44,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:44,918 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 07:16:44,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193247764] [2020-12-22 07:16:44,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:44,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:16:44,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997828513] [2020-12-22 07:16:44,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:44,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:44,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:44,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:16:44,921 INFO L87 Difference]: Start difference. First operand 1361 states and 1765 transitions. Second operand 6 states. [2020-12-22 07:16:45,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:45,446 INFO L93 Difference]: Finished difference Result 3233 states and 4335 transitions. [2020-12-22 07:16:45,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:16:45,447 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-12-22 07:16:45,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:45,459 INFO L225 Difference]: With dead ends: 3233 [2020-12-22 07:16:45,459 INFO L226 Difference]: Without dead ends: 2414 [2020-12-22 07:16:45,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:16:45,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2414 states. [2020-12-22 07:16:45,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2414 to 1361. [2020-12-22 07:16:45,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1361 states. [2020-12-22 07:16:45,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1753 transitions. [2020-12-22 07:16:45,632 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1753 transitions. Word has length 81 [2020-12-22 07:16:45,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:45,632 INFO L481 AbstractCegarLoop]: Abstraction has 1361 states and 1753 transitions. [2020-12-22 07:16:45,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:45,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1753 transitions. [2020-12-22 07:16:45,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 07:16:45,634 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:45,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:16:45,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 07:16:45,635 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:45,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:45,636 INFO L82 PathProgramCache]: Analyzing trace with hash -659983772, now seen corresponding path program 1 times [2020-12-22 07:16:45,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:45,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776687782] [2020-12-22 07:16:45,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:45,722 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 07:16:45,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776687782] [2020-12-22 07:16:45,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:45,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:45,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719982596] [2020-12-22 07:16:45,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:16:45,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:45,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:16:45,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:16:45,724 INFO L87 Difference]: Start difference. First operand 1361 states and 1753 transitions. Second operand 4 states. [2020-12-22 07:16:45,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:45,960 INFO L93 Difference]: Finished difference Result 2709 states and 3522 transitions. [2020-12-22 07:16:45,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:16:45,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-12-22 07:16:45,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:45,984 INFO L225 Difference]: With dead ends: 2709 [2020-12-22 07:16:45,984 INFO L226 Difference]: Without dead ends: 1424 [2020-12-22 07:16:45,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 07:16:45,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2020-12-22 07:16:46,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1061. [2020-12-22 07:16:46,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1061 states. [2020-12-22 07:16:46,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1385 transitions. [2020-12-22 07:16:46,160 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1385 transitions. Word has length 81 [2020-12-22 07:16:46,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:46,161 INFO L481 AbstractCegarLoop]: Abstraction has 1061 states and 1385 transitions. [2020-12-22 07:16:46,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:16:46,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1385 transitions. [2020-12-22 07:16:46,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 07:16:46,162 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:46,162 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:16:46,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 07:16:46,163 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:46,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:46,163 INFO L82 PathProgramCache]: Analyzing trace with hash -63459148, now seen corresponding path program 1 times [2020-12-22 07:16:46,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:46,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896776709] [2020-12-22 07:16:46,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:46,205 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 07:16:46,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896776709] [2020-12-22 07:16:46,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:46,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:46,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170154093] [2020-12-22 07:16:46,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:46,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:46,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:46,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:46,207 INFO L87 Difference]: Start difference. First operand 1061 states and 1385 transitions. Second operand 3 states. [2020-12-22 07:16:46,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:46,526 INFO L93 Difference]: Finished difference Result 2507 states and 3293 transitions. [2020-12-22 07:16:46,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:46,527 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-22 07:16:46,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:46,531 INFO L225 Difference]: With dead ends: 2507 [2020-12-22 07:16:46,531 INFO L226 Difference]: Without dead ends: 1596 [2020-12-22 07:16:46,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 07:16:46,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2020-12-22 07:16:46,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1067. [2020-12-22 07:16:46,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1067 states. [2020-12-22 07:16:46,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 1391 transitions. [2020-12-22 07:16:46,716 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 1391 transitions. Word has length 82 [2020-12-22 07:16:46,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:46,716 INFO L481 AbstractCegarLoop]: Abstraction has 1067 states and 1391 transitions. [2020-12-22 07:16:46,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:46,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 1391 transitions. [2020-12-22 07:16:46,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 07:16:46,720 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:46,720 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:16:46,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 07:16:46,720 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:46,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:46,721 INFO L82 PathProgramCache]: Analyzing trace with hash -753963456, now seen corresponding path program 1 times [2020-12-22 07:16:46,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:46,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776176287] [2020-12-22 07:16:46,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:46,810 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 07:16:46,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776176287] [2020-12-22 07:16:46,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:46,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:46,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092445180] [2020-12-22 07:16:46,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:16:46,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:46,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:16:46,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:16:46,813 INFO L87 Difference]: Start difference. First operand 1067 states and 1391 transitions. Second operand 4 states. [2020-12-22 07:16:47,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:47,063 INFO L93 Difference]: Finished difference Result 2451 states and 3213 transitions. [2020-12-22 07:16:47,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:16:47,063 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-12-22 07:16:47,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:47,066 INFO L225 Difference]: With dead ends: 2451 [2020-12-22 07:16:47,067 INFO L226 Difference]: Without dead ends: 1484 [2020-12-22 07:16:47,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 07:16:47,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2020-12-22 07:16:47,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1007. [2020-12-22 07:16:47,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1007 states. [2020-12-22 07:16:47,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1309 transitions. [2020-12-22 07:16:47,206 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1309 transitions. Word has length 82 [2020-12-22 07:16:47,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:47,207 INFO L481 AbstractCegarLoop]: Abstraction has 1007 states and 1309 transitions. [2020-12-22 07:16:47,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:16:47,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1309 transitions. [2020-12-22 07:16:47,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 07:16:47,208 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:47,208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:16:47,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 07:16:47,209 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:47,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:47,209 INFO L82 PathProgramCache]: Analyzing trace with hash -883855950, now seen corresponding path program 1 times [2020-12-22 07:16:47,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:47,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529704069] [2020-12-22 07:16:47,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:47,365 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 07:16:47,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529704069] [2020-12-22 07:16:47,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:47,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:16:47,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710074672] [2020-12-22 07:16:47,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:47,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:47,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:47,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:16:47,368 INFO L87 Difference]: Start difference. First operand 1007 states and 1309 transitions. Second operand 6 states. [2020-12-22 07:16:48,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:48,033 INFO L93 Difference]: Finished difference Result 3328 states and 4525 transitions. [2020-12-22 07:16:48,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:16:48,034 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-12-22 07:16:48,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:48,039 INFO L225 Difference]: With dead ends: 3328 [2020-12-22 07:16:48,040 INFO L226 Difference]: Without dead ends: 2520 [2020-12-22 07:16:48,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:16:48,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2520 states. [2020-12-22 07:16:48,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2520 to 995. [2020-12-22 07:16:48,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-12-22 07:16:48,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1297 transitions. [2020-12-22 07:16:48,197 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1297 transitions. Word has length 84 [2020-12-22 07:16:48,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:48,197 INFO L481 AbstractCegarLoop]: Abstraction has 995 states and 1297 transitions. [2020-12-22 07:16:48,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:48,198 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1297 transitions. [2020-12-22 07:16:48,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 07:16:48,199 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:48,199 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:16:48,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 07:16:48,199 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:48,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:48,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1751255189, now seen corresponding path program 1 times [2020-12-22 07:16:48,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:48,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207682005] [2020-12-22 07:16:48,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:48,290 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 07:16:48,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207682005] [2020-12-22 07:16:48,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:48,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:16:48,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973972864] [2020-12-22 07:16:48,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:48,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:48,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:48,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:16:48,293 INFO L87 Difference]: Start difference. First operand 995 states and 1297 transitions. Second operand 6 states. [2020-12-22 07:16:48,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:48,647 INFO L93 Difference]: Finished difference Result 2392 states and 3268 transitions. [2020-12-22 07:16:48,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:16:48,648 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-12-22 07:16:48,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:48,652 INFO L225 Difference]: With dead ends: 2392 [2020-12-22 07:16:48,652 INFO L226 Difference]: Without dead ends: 1584 [2020-12-22 07:16:48,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:16:48,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2020-12-22 07:16:48,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1001. [2020-12-22 07:16:48,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1001 states. [2020-12-22 07:16:48,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1303 transitions. [2020-12-22 07:16:48,795 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1303 transitions. Word has length 85 [2020-12-22 07:16:48,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:48,795 INFO L481 AbstractCegarLoop]: Abstraction has 1001 states and 1303 transitions. [2020-12-22 07:16:48,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:48,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1303 transitions. [2020-12-22 07:16:48,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-22 07:16:48,798 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:48,799 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:16:48,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 07:16:48,799 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:48,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:48,800 INFO L82 PathProgramCache]: Analyzing trace with hash 125687478, now seen corresponding path program 1 times [2020-12-22 07:16:48,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:48,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594100202] [2020-12-22 07:16:48,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:48,979 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:48,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594100202] [2020-12-22 07:16:48,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255290170] [2020-12-22 07:16:48,979 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 07:16:49,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:49,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 07:16:49,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:16:49,593 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 07:16:49,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:16:49,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2020-12-22 07:16:49,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775005534] [2020-12-22 07:16:49,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:49,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:49,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:49,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-12-22 07:16:49,595 INFO L87 Difference]: Start difference. First operand 1001 states and 1303 transitions. Second operand 6 states. [2020-12-22 07:16:50,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:50,078 INFO L93 Difference]: Finished difference Result 2597 states and 3519 transitions. [2020-12-22 07:16:50,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:16:50,079 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2020-12-22 07:16:50,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:50,084 INFO L225 Difference]: With dead ends: 2597 [2020-12-22 07:16:50,084 INFO L226 Difference]: Without dead ends: 1783 [2020-12-22 07:16:50,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-12-22 07:16:50,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2020-12-22 07:16:50,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1001. [2020-12-22 07:16:50,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1001 states. [2020-12-22 07:16:50,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1302 transitions. [2020-12-22 07:16:50,254 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1302 transitions. Word has length 135 [2020-12-22 07:16:50,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:50,254 INFO L481 AbstractCegarLoop]: Abstraction has 1001 states and 1302 transitions. [2020-12-22 07:16:50,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:50,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1302 transitions. [2020-12-22 07:16:50,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-22 07:16:50,257 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:50,258 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:16:50,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:16:50,472 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:16:50,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:50,474 INFO L82 PathProgramCache]: Analyzing trace with hash -2123135119, now seen corresponding path program 1 times [2020-12-22 07:16:50,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:50,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531292774] [2020-12-22 07:16:50,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:50,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:50,675 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:50,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531292774] [2020-12-22 07:16:50,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850789248] [2020-12-22 07:16:50,675 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 07:16:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:50,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 07:16:50,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:16:51,186 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:51,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:16:51,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-12-22 07:16:51,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833450048] [2020-12-22 07:16:51,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 07:16:51,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:51,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 07:16:51,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:16:51,189 INFO L87 Difference]: Start difference. First operand 1001 states and 1302 transitions. Second operand 13 states. [2020-12-22 07:17:05,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:05,939 INFO L93 Difference]: Finished difference Result 16835 states and 22485 transitions. [2020-12-22 07:17:05,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2020-12-22 07:17:05,940 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 139 [2020-12-22 07:17:05,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:05,980 INFO L225 Difference]: With dead ends: 16835 [2020-12-22 07:17:05,980 INFO L226 Difference]: Without dead ends: 16027 [2020-12-22 07:17:06,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28995 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=8289, Invalid=55467, Unknown=0, NotChecked=0, Total=63756 [2020-12-22 07:17:06,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16027 states. [2020-12-22 07:17:06,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16027 to 2722. [2020-12-22 07:17:06,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2722 states. [2020-12-22 07:17:06,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2722 states to 2722 states and 3549 transitions. [2020-12-22 07:17:06,809 INFO L78 Accepts]: Start accepts. Automaton has 2722 states and 3549 transitions. Word has length 139 [2020-12-22 07:17:06,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:06,809 INFO L481 AbstractCegarLoop]: Abstraction has 2722 states and 3549 transitions. [2020-12-22 07:17:06,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 07:17:06,810 INFO L276 IsEmpty]: Start isEmpty. Operand 2722 states and 3549 transitions. [2020-12-22 07:17:06,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-12-22 07:17:06,816 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:06,816 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:17:07,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:07,031 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:17:07,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:07,032 INFO L82 PathProgramCache]: Analyzing trace with hash -57519925, now seen corresponding path program 1 times [2020-12-22 07:17:07,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:07,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016099381] [2020-12-22 07:17:07,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:07,256 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:07,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016099381] [2020-12-22 07:17:07,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821677172] [2020-12-22 07:17:07,257 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 07:17:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:07,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-22 07:17:07,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:17:07,661 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 07:17:07,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:17:07,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 9 [2020-12-22 07:17:07,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254258961] [2020-12-22 07:17:07,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:17:07,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:07,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:17:07,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:17:07,663 INFO L87 Difference]: Start difference. First operand 2722 states and 3549 transitions. Second operand 6 states. [2020-12-22 07:17:08,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:08,775 INFO L93 Difference]: Finished difference Result 7296 states and 9902 transitions. [2020-12-22 07:17:08,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:17:08,775 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2020-12-22 07:17:08,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:08,786 INFO L225 Difference]: With dead ends: 7296 [2020-12-22 07:17:08,786 INFO L226 Difference]: Without dead ends: 4801 [2020-12-22 07:17:08,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 142 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-12-22 07:17:08,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4801 states. [2020-12-22 07:17:09,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4801 to 2379. [2020-12-22 07:17:09,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2379 states. [2020-12-22 07:17:09,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2379 states to 2379 states and 3108 transitions. [2020-12-22 07:17:09,385 INFO L78 Accepts]: Start accepts. Automaton has 2379 states and 3108 transitions. Word has length 140 [2020-12-22 07:17:09,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:09,387 INFO L481 AbstractCegarLoop]: Abstraction has 2379 states and 3108 transitions. [2020-12-22 07:17:09,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:17:09,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2379 states and 3108 transitions. [2020-12-22 07:17:09,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-22 07:17:09,394 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:09,394 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:17:09,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:09,610 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:17:09,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:09,611 INFO L82 PathProgramCache]: Analyzing trace with hash -7531545, now seen corresponding path program 1 times [2020-12-22 07:17:09,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:09,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973920256] [2020-12-22 07:17:09,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:09,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:09,752 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-22 07:17:09,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973920256] [2020-12-22 07:17:09,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:17:09,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:17:09,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837235906] [2020-12-22 07:17:09,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:17:09,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:09,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:17:09,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:17:09,755 INFO L87 Difference]: Start difference. First operand 2379 states and 3108 transitions. Second operand 7 states. [2020-12-22 07:17:12,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:12,530 INFO L93 Difference]: Finished difference Result 14125 states and 18988 transitions. [2020-12-22 07:17:12,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 07:17:12,530 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2020-12-22 07:17:12,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:12,560 INFO L225 Difference]: With dead ends: 14125 [2020-12-22 07:17:12,560 INFO L226 Difference]: Without dead ends: 12013 [2020-12-22 07:17:12,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-12-22 07:17:12,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12013 states. [2020-12-22 07:17:13,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12013 to 2835. [2020-12-22 07:17:13,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2835 states. [2020-12-22 07:17:13,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 3638 transitions. [2020-12-22 07:17:13,201 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 3638 transitions. Word has length 141 [2020-12-22 07:17:13,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:13,202 INFO L481 AbstractCegarLoop]: Abstraction has 2835 states and 3638 transitions. [2020-12-22 07:17:13,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:17:13,202 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 3638 transitions. [2020-12-22 07:17:13,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 07:17:13,208 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:13,209 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:17:13,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 07:17:13,209 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:17:13,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:13,210 INFO L82 PathProgramCache]: Analyzing trace with hash -781251252, now seen corresponding path program 1 times [2020-12-22 07:17:13,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:13,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367701964] [2020-12-22 07:17:13,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:13,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:13,402 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:13,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367701964] [2020-12-22 07:17:13,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015065728] [2020-12-22 07:17:13,403 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 07:17:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:13,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 07:17:13,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:17:13,794 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-22 07:17:13,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:17:13,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2020-12-22 07:17:13,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021536166] [2020-12-22 07:17:13,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 07:17:13,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:13,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 07:17:13,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:17:13,796 INFO L87 Difference]: Start difference. First operand 2835 states and 3638 transitions. Second operand 11 states. [2020-12-22 07:17:16,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:16,444 INFO L93 Difference]: Finished difference Result 8090 states and 10560 transitions. [2020-12-22 07:17:16,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-22 07:17:16,445 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 143 [2020-12-22 07:17:16,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:16,454 INFO L225 Difference]: With dead ends: 8090 [2020-12-22 07:17:16,454 INFO L226 Difference]: Without dead ends: 5319 [2020-12-22 07:17:16,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=525, Invalid=1545, Unknown=0, NotChecked=0, Total=2070 [2020-12-22 07:17:16,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5319 states. [2020-12-22 07:17:16,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5319 to 2355. [2020-12-22 07:17:16,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2355 states. [2020-12-22 07:17:16,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 3024 transitions. [2020-12-22 07:17:16,924 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 3024 transitions. Word has length 143 [2020-12-22 07:17:16,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:16,925 INFO L481 AbstractCegarLoop]: Abstraction has 2355 states and 3024 transitions. [2020-12-22 07:17:16,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 07:17:16,925 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 3024 transitions. [2020-12-22 07:17:16,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 07:17:16,931 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:16,931 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:17:17,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:17,146 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:17:17,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:17,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1655490771, now seen corresponding path program 1 times [2020-12-22 07:17:17,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:17,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724913819] [2020-12-22 07:17:17,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:17,379 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:17,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724913819] [2020-12-22 07:17:17,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455140651] [2020-12-22 07:17:17,379 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 07:17:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:17,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 07:17:17,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:17:17,645 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 07:17:17,927 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:17,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:17:17,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 15 [2020-12-22 07:17:17,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004138358] [2020-12-22 07:17:17,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 07:17:17,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:17,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 07:17:17,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-12-22 07:17:17,929 INFO L87 Difference]: Start difference. First operand 2355 states and 3024 transitions. Second operand 16 states. [2020-12-22 07:17:20,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:20,314 INFO L93 Difference]: Finished difference Result 6490 states and 8366 transitions. [2020-12-22 07:17:20,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 07:17:20,315 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 143 [2020-12-22 07:17:20,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:20,322 INFO L225 Difference]: With dead ends: 6490 [2020-12-22 07:17:20,322 INFO L226 Difference]: Without dead ends: 4350 [2020-12-22 07:17:20,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 136 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=267, Invalid=1065, Unknown=0, NotChecked=0, Total=1332 [2020-12-22 07:17:20,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4350 states. [2020-12-22 07:17:20,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4350 to 2613. [2020-12-22 07:17:20,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2613 states. [2020-12-22 07:17:20,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 3348 transitions. [2020-12-22 07:17:20,727 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 3348 transitions. Word has length 143 [2020-12-22 07:17:20,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:20,728 INFO L481 AbstractCegarLoop]: Abstraction has 2613 states and 3348 transitions. [2020-12-22 07:17:20,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 07:17:20,728 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 3348 transitions. [2020-12-22 07:17:20,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 07:17:20,734 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:20,734 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:17:20,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-22 07:17:20,949 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:17:20,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:20,950 INFO L82 PathProgramCache]: Analyzing trace with hash 508125803, now seen corresponding path program 1 times [2020-12-22 07:17:20,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:20,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074883176] [2020-12-22 07:17:20,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:21,095 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-22 07:17:21,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074883176] [2020-12-22 07:17:21,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:17:21,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:17:21,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883214936] [2020-12-22 07:17:21,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:17:21,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:21,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:17:21,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:17:21,097 INFO L87 Difference]: Start difference. First operand 2613 states and 3348 transitions. Second operand 5 states. [2020-12-22 07:17:21,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:21,577 INFO L93 Difference]: Finished difference Result 4932 states and 6367 transitions. [2020-12-22 07:17:21,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:17:21,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-12-22 07:17:21,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:21,581 INFO L225 Difference]: With dead ends: 4932 [2020-12-22 07:17:21,581 INFO L226 Difference]: Without dead ends: 2473 [2020-12-22 07:17:21,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 07:17:21,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2020-12-22 07:17:22,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 2473. [2020-12-22 07:17:22,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2473 states. [2020-12-22 07:17:22,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 3171 transitions. [2020-12-22 07:17:22,222 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 3171 transitions. Word has length 143 [2020-12-22 07:17:22,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:22,223 INFO L481 AbstractCegarLoop]: Abstraction has 2473 states and 3171 transitions. [2020-12-22 07:17:22,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:17:22,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 3171 transitions. [2020-12-22 07:17:22,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-12-22 07:17:22,227 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:22,227 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:17:22,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-22 07:17:22,228 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:17:22,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:22,228 INFO L82 PathProgramCache]: Analyzing trace with hash -529555049, now seen corresponding path program 1 times [2020-12-22 07:17:22,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:22,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974863951] [2020-12-22 07:17:22,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:22,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:22,498 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:22,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974863951] [2020-12-22 07:17:22,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715523998] [2020-12-22 07:17:22,498 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 07:17:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:22,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-22 07:17:22,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:17:22,821 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 07:17:22,838 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 07:17:23,253 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:23,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:17:23,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 17 [2020-12-22 07:17:23,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747533879] [2020-12-22 07:17:23,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 07:17:23,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:23,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 07:17:23,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2020-12-22 07:17:23,255 INFO L87 Difference]: Start difference. First operand 2473 states and 3171 transitions. Second operand 18 states. [2020-12-22 07:17:26,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:26,336 INFO L93 Difference]: Finished difference Result 6774 states and 8708 transitions. [2020-12-22 07:17:26,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-22 07:17:26,336 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 144 [2020-12-22 07:17:26,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:26,343 INFO L225 Difference]: With dead ends: 6774 [2020-12-22 07:17:26,343 INFO L226 Difference]: Without dead ends: 4516 [2020-12-22 07:17:26,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=401, Invalid=1579, Unknown=0, NotChecked=0, Total=1980 [2020-12-22 07:17:26,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4516 states. [2020-12-22 07:17:26,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4516 to 2756. [2020-12-22 07:17:26,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2756 states. [2020-12-22 07:17:26,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 3525 transitions. [2020-12-22 07:17:26,985 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 3525 transitions. Word has length 144 [2020-12-22 07:17:26,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:26,985 INFO L481 AbstractCegarLoop]: Abstraction has 2756 states and 3525 transitions. [2020-12-22 07:17:26,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 07:17:26,985 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 3525 transitions. [2020-12-22 07:17:26,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-12-22 07:17:26,990 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:26,990 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:17:27,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:27,204 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:17:27,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:27,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1568139623, now seen corresponding path program 1 times [2020-12-22 07:17:27,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:27,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884760405] [2020-12-22 07:17:27,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:27,269 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-22 07:17:27,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884760405] [2020-12-22 07:17:27,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:17:27,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:17:27,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094390107] [2020-12-22 07:17:27,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:17:27,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:27,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:17:27,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:17:27,271 INFO L87 Difference]: Start difference. First operand 2756 states and 3525 transitions. Second operand 4 states. [2020-12-22 07:17:27,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:27,890 INFO L93 Difference]: Finished difference Result 5143 states and 6621 transitions. [2020-12-22 07:17:27,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:17:27,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-12-22 07:17:27,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:27,893 INFO L225 Difference]: With dead ends: 5143 [2020-12-22 07:17:27,893 INFO L226 Difference]: Without dead ends: 2543 [2020-12-22 07:17:27,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 07:17:27,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2543 states. [2020-12-22 07:17:28,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2543 to 2531. [2020-12-22 07:17:28,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2531 states. [2020-12-22 07:17:28,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2531 states to 2531 states and 3225 transitions. [2020-12-22 07:17:28,244 INFO L78 Accepts]: Start accepts. Automaton has 2531 states and 3225 transitions. Word has length 144 [2020-12-22 07:17:28,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:28,245 INFO L481 AbstractCegarLoop]: Abstraction has 2531 states and 3225 transitions. [2020-12-22 07:17:28,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:17:28,245 INFO L276 IsEmpty]: Start isEmpty. Operand 2531 states and 3225 transitions. [2020-12-22 07:17:28,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-12-22 07:17:28,248 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:28,248 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:17:28,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-22 07:17:28,248 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:17:28,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:28,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1812744130, now seen corresponding path program 1 times [2020-12-22 07:17:28,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:28,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070829553] [2020-12-22 07:17:28,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:28,474 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:28,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070829553] [2020-12-22 07:17:28,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:17:28,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 07:17:28,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783208915] [2020-12-22 07:17:28,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 07:17:28,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:28,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 07:17:28,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:17:28,476 INFO L87 Difference]: Start difference. First operand 2531 states and 3225 transitions. Second operand 10 states. [2020-12-22 07:17:29,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:29,930 INFO L93 Difference]: Finished difference Result 6662 states and 8560 transitions. [2020-12-22 07:17:29,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 07:17:29,930 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 144 [2020-12-22 07:17:29,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:29,935 INFO L225 Difference]: With dead ends: 6662 [2020-12-22 07:17:29,935 INFO L226 Difference]: Without dead ends: 4346 [2020-12-22 07:17:29,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2020-12-22 07:17:29,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4346 states. [2020-12-22 07:17:30,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4346 to 2866. [2020-12-22 07:17:30,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2866 states. [2020-12-22 07:17:30,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 3648 transitions. [2020-12-22 07:17:30,387 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 3648 transitions. Word has length 144 [2020-12-22 07:17:30,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:30,387 INFO L481 AbstractCegarLoop]: Abstraction has 2866 states and 3648 transitions. [2020-12-22 07:17:30,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 07:17:30,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 3648 transitions. [2020-12-22 07:17:30,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-12-22 07:17:30,390 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:30,391 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:17:30,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-12-22 07:17:30,391 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:17:30,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:30,391 INFO L82 PathProgramCache]: Analyzing trace with hash 530571844, now seen corresponding path program 1 times [2020-12-22 07:17:30,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:30,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703347415] [2020-12-22 07:17:30,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:30,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:30,512 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-22 07:17:30,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703347415] [2020-12-22 07:17:30,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:17:30,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:17:30,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034432294] [2020-12-22 07:17:30,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:17:30,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:30,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:17:30,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:17:30,514 INFO L87 Difference]: Start difference. First operand 2866 states and 3648 transitions. Second operand 5 states. [2020-12-22 07:17:31,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:31,111 INFO L93 Difference]: Finished difference Result 5358 states and 6859 transitions. [2020-12-22 07:17:31,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:17:31,111 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-12-22 07:17:31,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:31,114 INFO L225 Difference]: With dead ends: 5358 [2020-12-22 07:17:31,114 INFO L226 Difference]: Without dead ends: 2649 [2020-12-22 07:17:31,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 07:17:31,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2649 states. [2020-12-22 07:17:31,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2649 to 2649. [2020-12-22 07:17:31,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2649 states. [2020-12-22 07:17:31,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2649 states to 2649 states and 3375 transitions. [2020-12-22 07:17:31,512 INFO L78 Accepts]: Start accepts. Automaton has 2649 states and 3375 transitions. Word has length 144 [2020-12-22 07:17:31,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:31,512 INFO L481 AbstractCegarLoop]: Abstraction has 2649 states and 3375 transitions. [2020-12-22 07:17:31,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:17:31,512 INFO L276 IsEmpty]: Start isEmpty. Operand 2649 states and 3375 transitions. [2020-12-22 07:17:31,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-22 07:17:31,516 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:31,516 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:17:31,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-12-22 07:17:31,517 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:17:31,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:31,517 INFO L82 PathProgramCache]: Analyzing trace with hash -922037262, now seen corresponding path program 1 times [2020-12-22 07:17:31,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:31,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357113630] [2020-12-22 07:17:31,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:31,790 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:31,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357113630] [2020-12-22 07:17:31,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883840728] [2020-12-22 07:17:31,790 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 07:17:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:32,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 07:17:32,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:17:32,227 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 07:17:32,512 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:32,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:17:32,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2020-12-22 07:17:32,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973675199] [2020-12-22 07:17:32,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 07:17:32,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:32,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 07:17:32,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:17:32,514 INFO L87 Difference]: Start difference. First operand 2649 states and 3375 transitions. Second operand 11 states. [2020-12-22 07:17:33,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:33,876 INFO L93 Difference]: Finished difference Result 7317 states and 9331 transitions. [2020-12-22 07:17:33,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 07:17:33,883 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 145 [2020-12-22 07:17:33,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:33,888 INFO L225 Difference]: With dead ends: 7317 [2020-12-22 07:17:33,888 INFO L226 Difference]: Without dead ends: 4883 [2020-12-22 07:17:33,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 139 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2020-12-22 07:17:33,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4883 states. [2020-12-22 07:17:34,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4883 to 2660. [2020-12-22 07:17:34,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2660 states. [2020-12-22 07:17:34,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2660 states to 2660 states and 3386 transitions. [2020-12-22 07:17:34,339 INFO L78 Accepts]: Start accepts. Automaton has 2660 states and 3386 transitions. Word has length 145 [2020-12-22 07:17:34,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:34,340 INFO L481 AbstractCegarLoop]: Abstraction has 2660 states and 3386 transitions. [2020-12-22 07:17:34,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 07:17:34,340 INFO L276 IsEmpty]: Start isEmpty. Operand 2660 states and 3386 transitions. [2020-12-22 07:17:34,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-22 07:17:34,342 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:34,343 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:17:34,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:34,545 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:17:34,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:34,545 INFO L82 PathProgramCache]: Analyzing trace with hash -169521162, now seen corresponding path program 1 times [2020-12-22 07:17:34,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:34,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092733144] [2020-12-22 07:17:34,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:34,732 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:34,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092733144] [2020-12-22 07:17:34,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455955406] [2020-12-22 07:17:34,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 07:17:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:34,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 07:17:34,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:17:35,134 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 07:17:35,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:17:35,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2020-12-22 07:17:35,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119026498] [2020-12-22 07:17:35,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:17:35,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:35,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:17:35,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-12-22 07:17:35,136 INFO L87 Difference]: Start difference. First operand 2660 states and 3386 transitions. Second operand 6 states. [2020-12-22 07:17:36,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:36,360 INFO L93 Difference]: Finished difference Result 8694 states and 11345 transitions. [2020-12-22 07:17:36,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:17:36,361 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2020-12-22 07:17:36,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:36,366 INFO L225 Difference]: With dead ends: 8694 [2020-12-22 07:17:36,366 INFO L226 Difference]: Without dead ends: 6209 [2020-12-22 07:17:36,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-12-22 07:17:36,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6209 states. [2020-12-22 07:17:36,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6209 to 2660. [2020-12-22 07:17:36,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2660 states. [2020-12-22 07:17:36,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2660 states to 2660 states and 3384 transitions. [2020-12-22 07:17:36,808 INFO L78 Accepts]: Start accepts. Automaton has 2660 states and 3384 transitions. Word has length 145 [2020-12-22 07:17:36,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:36,808 INFO L481 AbstractCegarLoop]: Abstraction has 2660 states and 3384 transitions. [2020-12-22 07:17:36,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:17:36,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2660 states and 3384 transitions. [2020-12-22 07:17:36,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-12-22 07:17:36,812 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:36,812 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:17:37,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-12-22 07:17:37,023 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:17:37,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:37,024 INFO L82 PathProgramCache]: Analyzing trace with hash -601450378, now seen corresponding path program 1 times [2020-12-22 07:17:37,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:37,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645926766] [2020-12-22 07:17:37,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:37,166 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:37,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645926766] [2020-12-22 07:17:37,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836989829] [2020-12-22 07:17:37,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 07:17:37,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:37,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 07:17:37,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:17:37,538 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:37,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:17:37,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 8 [2020-12-22 07:17:37,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659168274] [2020-12-22 07:17:37,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:17:37,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:37,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:17:37,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:17:37,540 INFO L87 Difference]: Start difference. First operand 2660 states and 3384 transitions. Second operand 8 states. [2020-12-22 07:17:39,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:39,196 INFO L93 Difference]: Finished difference Result 10132 states and 12933 transitions. [2020-12-22 07:17:39,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 07:17:39,197 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 146 [2020-12-22 07:17:39,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:39,206 INFO L225 Difference]: With dead ends: 10132 [2020-12-22 07:17:39,207 INFO L226 Difference]: Without dead ends: 7687 [2020-12-22 07:17:39,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2020-12-22 07:17:39,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7687 states. [2020-12-22 07:17:39,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7687 to 4027. [2020-12-22 07:17:39,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4027 states. [2020-12-22 07:17:39,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4027 states to 4027 states and 5133 transitions. [2020-12-22 07:17:39,915 INFO L78 Accepts]: Start accepts. Automaton has 4027 states and 5133 transitions. Word has length 146 [2020-12-22 07:17:39,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:39,915 INFO L481 AbstractCegarLoop]: Abstraction has 4027 states and 5133 transitions. [2020-12-22 07:17:39,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 07:17:39,915 INFO L276 IsEmpty]: Start isEmpty. Operand 4027 states and 5133 transitions. [2020-12-22 07:17:39,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-12-22 07:17:39,920 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:39,921 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:17:40,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:40,129 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:17:40,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:40,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1640034952, now seen corresponding path program 1 times [2020-12-22 07:17:40,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:40,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552833626] [2020-12-22 07:17:40,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:40,198 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-22 07:17:40,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552833626] [2020-12-22 07:17:40,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:17:40,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:17:40,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33118140] [2020-12-22 07:17:40,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:17:40,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:40,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:17:40,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:17:40,201 INFO L87 Difference]: Start difference. First operand 4027 states and 5133 transitions. Second operand 4 states. [2020-12-22 07:17:40,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:40,809 INFO L93 Difference]: Finished difference Result 7031 states and 9042 transitions. [2020-12-22 07:17:40,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:17:40,810 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-12-22 07:17:40,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:40,814 INFO L225 Difference]: With dead ends: 7031 [2020-12-22 07:17:40,814 INFO L226 Difference]: Without dead ends: 3219 [2020-12-22 07:17:40,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 07:17:40,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2020-12-22 07:17:41,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3200. [2020-12-22 07:17:41,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3200 states. [2020-12-22 07:17:41,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 4077 transitions. [2020-12-22 07:17:41,318 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 4077 transitions. Word has length 146 [2020-12-22 07:17:41,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:41,318 INFO L481 AbstractCegarLoop]: Abstraction has 3200 states and 4077 transitions. [2020-12-22 07:17:41,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:17:41,318 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 4077 transitions. [2020-12-22 07:17:41,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 07:17:41,321 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:41,321 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:17:41,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-12-22 07:17:41,322 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:17:41,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:41,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1772878816, now seen corresponding path program 1 times [2020-12-22 07:17:41,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:41,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683867912] [2020-12-22 07:17:41,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:41,557 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:41,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683867912] [2020-12-22 07:17:41,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345096795] [2020-12-22 07:17:41,558 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 07:17:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:41,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 07:17:41,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:17:42,040 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:42,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:17:42,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2020-12-22 07:17:42,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920139009] [2020-12-22 07:17:42,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 07:17:42,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:42,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 07:17:42,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-12-22 07:17:42,042 INFO L87 Difference]: Start difference. First operand 3200 states and 4077 transitions. Second operand 15 states. [2020-12-22 07:17:54,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:54,010 INFO L93 Difference]: Finished difference Result 18991 states and 24565 transitions. [2020-12-22 07:17:54,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2020-12-22 07:17:54,010 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 148 [2020-12-22 07:17:54,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:54,028 INFO L225 Difference]: With dead ends: 18991 [2020-12-22 07:17:54,028 INFO L226 Difference]: Without dead ends: 16006 [2020-12-22 07:17:54,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12818 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=4607, Invalid=26899, Unknown=0, NotChecked=0, Total=31506 [2020-12-22 07:17:54,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16006 states. [2020-12-22 07:17:54,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16006 to 3079. [2020-12-22 07:17:54,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3079 states. [2020-12-22 07:17:54,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3079 states to 3079 states and 3868 transitions. [2020-12-22 07:17:54,734 INFO L78 Accepts]: Start accepts. Automaton has 3079 states and 3868 transitions. Word has length 148 [2020-12-22 07:17:54,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:54,734 INFO L481 AbstractCegarLoop]: Abstraction has 3079 states and 3868 transitions. [2020-12-22 07:17:54,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 07:17:54,734 INFO L276 IsEmpty]: Start isEmpty. Operand 3079 states and 3868 transitions. [2020-12-22 07:17:54,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-12-22 07:17:54,737 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:54,737 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:17:54,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:54,944 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:17:54,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:54,945 INFO L82 PathProgramCache]: Analyzing trace with hash -2043778853, now seen corresponding path program 1 times [2020-12-22 07:17:54,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:54,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448939843] [2020-12-22 07:17:54,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:55,144 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 07:17:55,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448939843] [2020-12-22 07:17:55,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:17:55,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:17:55,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871585357] [2020-12-22 07:17:55,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:17:55,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:55,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:17:55,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:17:55,147 INFO L87 Difference]: Start difference. First operand 3079 states and 3868 transitions. Second operand 6 states. [2020-12-22 07:17:57,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:57,012 INFO L93 Difference]: Finished difference Result 10425 states and 13425 transitions. [2020-12-22 07:17:57,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:17:57,013 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2020-12-22 07:17:57,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:57,019 INFO L225 Difference]: With dead ends: 10425 [2020-12-22 07:17:57,020 INFO L226 Difference]: Without dead ends: 7629 [2020-12-22 07:17:57,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:17:57,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7629 states. [2020-12-22 07:17:57,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7629 to 3160. [2020-12-22 07:17:57,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3160 states. [2020-12-22 07:17:57,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3160 states to 3160 states and 3964 transitions. [2020-12-22 07:17:57,607 INFO L78 Accepts]: Start accepts. Automaton has 3160 states and 3964 transitions. Word has length 150 [2020-12-22 07:17:57,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:57,608 INFO L481 AbstractCegarLoop]: Abstraction has 3160 states and 3964 transitions. [2020-12-22 07:17:57,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:17:57,608 INFO L276 IsEmpty]: Start isEmpty. Operand 3160 states and 3964 transitions. [2020-12-22 07:17:57,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-22 07:17:57,610 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:57,610 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:17:57,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-12-22 07:17:57,611 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:17:57,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:57,611 INFO L82 PathProgramCache]: Analyzing trace with hash -253041123, now seen corresponding path program 1 times [2020-12-22 07:17:57,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:57,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461985603] [2020-12-22 07:17:57,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:57,849 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:57,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461985603] [2020-12-22 07:17:57,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434736360] [2020-12-22 07:17:57,849 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 07:17:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:58,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 07:17:58,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:17:58,304 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:58,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:17:58,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2020-12-22 07:17:58,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210704270] [2020-12-22 07:17:58,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:17:58,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:58,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:17:58,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:17:58,306 INFO L87 Difference]: Start difference. First operand 3160 states and 3964 transitions. Second operand 8 states. [2020-12-22 07:18:00,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:18:00,198 INFO L93 Difference]: Finished difference Result 9297 states and 11932 transitions. [2020-12-22 07:18:00,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 07:18:00,199 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 151 [2020-12-22 07:18:00,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:18:00,205 INFO L225 Difference]: With dead ends: 9297 [2020-12-22 07:18:00,205 INFO L226 Difference]: Without dead ends: 6420 [2020-12-22 07:18:00,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 155 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-12-22 07:18:00,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6420 states. [2020-12-22 07:18:00,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6420 to 3160. [2020-12-22 07:18:00,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3160 states. [2020-12-22 07:18:00,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3160 states to 3160 states and 3936 transitions. [2020-12-22 07:18:00,836 INFO L78 Accepts]: Start accepts. Automaton has 3160 states and 3936 transitions. Word has length 151 [2020-12-22 07:18:00,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:18:00,837 INFO L481 AbstractCegarLoop]: Abstraction has 3160 states and 3936 transitions. [2020-12-22 07:18:00,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 07:18:00,837 INFO L276 IsEmpty]: Start isEmpty. Operand 3160 states and 3936 transitions. [2020-12-22 07:18:00,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-22 07:18:00,839 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:18:00,840 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:18:01,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-12-22 07:18:01,041 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:18:01,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:18:01,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1045963189, now seen corresponding path program 1 times [2020-12-22 07:18:01,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:18:01,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269596816] [2020-12-22 07:18:01,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:18:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:01,145 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-22 07:18:01,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269596816] [2020-12-22 07:18:01,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:18:01,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:18:01,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839637210] [2020-12-22 07:18:01,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:18:01,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:18:01,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:18:01,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:18:01,147 INFO L87 Difference]: Start difference. First operand 3160 states and 3936 transitions. Second operand 6 states. [2020-12-22 07:18:04,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:18:04,009 INFO L93 Difference]: Finished difference Result 14633 states and 18742 transitions. [2020-12-22 07:18:04,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 07:18:04,009 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2020-12-22 07:18:04,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:18:04,020 INFO L225 Difference]: With dead ends: 14633 [2020-12-22 07:18:04,020 INFO L226 Difference]: Without dead ends: 11756 [2020-12-22 07:18:04,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-12-22 07:18:04,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11756 states. [2020-12-22 07:18:04,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11756 to 3629. [2020-12-22 07:18:04,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3629 states. [2020-12-22 07:18:04,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3629 states to 3629 states and 4471 transitions. [2020-12-22 07:18:04,761 INFO L78 Accepts]: Start accepts. Automaton has 3629 states and 4471 transitions. Word has length 151 [2020-12-22 07:18:04,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:18:04,761 INFO L481 AbstractCegarLoop]: Abstraction has 3629 states and 4471 transitions. [2020-12-22 07:18:04,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:18:04,761 INFO L276 IsEmpty]: Start isEmpty. Operand 3629 states and 4471 transitions. [2020-12-22 07:18:04,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-22 07:18:04,764 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:18:04,764 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:18:04,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-12-22 07:18:04,765 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:18:04,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:18:04,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1858726963, now seen corresponding path program 1 times [2020-12-22 07:18:04,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:18:04,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378986611] [2020-12-22 07:18:04,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:18:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:04,848 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-22 07:18:04,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378986611] [2020-12-22 07:18:04,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:18:04,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:18:04,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890226289] [2020-12-22 07:18:04,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:18:04,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:18:04,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:18:04,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:18:04,850 INFO L87 Difference]: Start difference. First operand 3629 states and 4471 transitions. Second operand 4 states. [2020-12-22 07:18:06,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:18:06,009 INFO L93 Difference]: Finished difference Result 8795 states and 10977 transitions. [2020-12-22 07:18:06,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:18:06,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-12-22 07:18:06,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:18:06,015 INFO L225 Difference]: With dead ends: 8795 [2020-12-22 07:18:06,015 INFO L226 Difference]: Without dead ends: 5449 [2020-12-22 07:18:06,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 07:18:06,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5449 states. [2020-12-22 07:18:06,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5449 to 4333. [2020-12-22 07:18:06,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4333 states. [2020-12-22 07:18:06,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4333 states to 4333 states and 5328 transitions. [2020-12-22 07:18:06,853 INFO L78 Accepts]: Start accepts. Automaton has 4333 states and 5328 transitions. Word has length 152 [2020-12-22 07:18:06,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:18:06,854 INFO L481 AbstractCegarLoop]: Abstraction has 4333 states and 5328 transitions. [2020-12-22 07:18:06,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:18:06,854 INFO L276 IsEmpty]: Start isEmpty. Operand 4333 states and 5328 transitions. [2020-12-22 07:18:06,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-22 07:18:06,857 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:18:06,858 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:18:06,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-12-22 07:18:06,858 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:18:06,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:18:06,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1020898076, now seen corresponding path program 1 times [2020-12-22 07:18:06,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:18:06,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844768551] [2020-12-22 07:18:06,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:18:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:06,992 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:18:06,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844768551] [2020-12-22 07:18:06,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251484139] [2020-12-22 07:18:06,993 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 07:18:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:07,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 07:18:07,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:18:07,412 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:18:07,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:18:07,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-12-22 07:18:07,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382800750] [2020-12-22 07:18:07,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:18:07,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:18:07,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:18:07,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:18:07,414 INFO L87 Difference]: Start difference. First operand 4333 states and 5328 transitions. Second operand 7 states. [2020-12-22 07:18:09,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:18:09,904 INFO L93 Difference]: Finished difference Result 15157 states and 19174 transitions. [2020-12-22 07:18:09,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 07:18:09,904 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-12-22 07:18:09,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:18:09,914 INFO L225 Difference]: With dead ends: 15157 [2020-12-22 07:18:09,914 INFO L226 Difference]: Without dead ends: 11107 [2020-12-22 07:18:09,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-12-22 07:18:09,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11107 states. [2020-12-22 07:18:11,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11107 to 6813. [2020-12-22 07:18:11,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6813 states. [2020-12-22 07:18:11,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6813 states to 6813 states and 8405 transitions. [2020-12-22 07:18:11,322 INFO L78 Accepts]: Start accepts. Automaton has 6813 states and 8405 transitions. Word has length 152 [2020-12-22 07:18:11,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:18:11,323 INFO L481 AbstractCegarLoop]: Abstraction has 6813 states and 8405 transitions. [2020-12-22 07:18:11,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:18:11,323 INFO L276 IsEmpty]: Start isEmpty. Operand 6813 states and 8405 transitions. [2020-12-22 07:18:11,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-22 07:18:11,326 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:18:11,327 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:18:11,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-12-22 07:18:11,533 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:18:11,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:18:11,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1980669719, now seen corresponding path program 1 times [2020-12-22 07:18:11,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:18:11,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516401257] [2020-12-22 07:18:11,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:18:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:11,732 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 26 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:18:11,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516401257] [2020-12-22 07:18:11,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752682183] [2020-12-22 07:18:11,733 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 07:18:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:11,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-22 07:18:11,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:18:12,209 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 35 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:18:12,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:18:12,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2020-12-22 07:18:12,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391834843] [2020-12-22 07:18:12,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 07:18:12,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:18:12,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 07:18:12,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-12-22 07:18:12,212 INFO L87 Difference]: Start difference. First operand 6813 states and 8405 transitions. Second operand 14 states. [2020-12-22 07:18:27,183 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-12-22 07:18:32,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:18:32,708 INFO L93 Difference]: Finished difference Result 35900 states and 45200 transitions. [2020-12-22 07:18:32,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 314 states. [2020-12-22 07:18:32,709 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 152 [2020-12-22 07:18:32,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:18:32,741 INFO L225 Difference]: With dead ends: 35900 [2020-12-22 07:18:32,741 INFO L226 Difference]: Without dead ends: 30532 [2020-12-22 07:18:32,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 323 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49817 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=12787, Invalid=92513, Unknown=0, NotChecked=0, Total=105300 [2020-12-22 07:18:32,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30532 states. [2020-12-22 07:18:35,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30532 to 10396. [2020-12-22 07:18:35,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10396 states. [2020-12-22 07:18:35,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10396 states to 10396 states and 12835 transitions. [2020-12-22 07:18:35,223 INFO L78 Accepts]: Start accepts. Automaton has 10396 states and 12835 transitions. Word has length 152 [2020-12-22 07:18:35,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:18:35,223 INFO L481 AbstractCegarLoop]: Abstraction has 10396 states and 12835 transitions. [2020-12-22 07:18:35,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 07:18:35,224 INFO L276 IsEmpty]: Start isEmpty. Operand 10396 states and 12835 transitions. [2020-12-22 07:18:35,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 07:18:35,230 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:18:35,230 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:18:35,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2020-12-22 07:18:35,432 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:18:35,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:18:35,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1169656938, now seen corresponding path program 1 times [2020-12-22 07:18:35,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:18:35,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285929006] [2020-12-22 07:18:35,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:18:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:35,784 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:18:35,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285929006] [2020-12-22 07:18:35,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813767452] [2020-12-22 07:18:35,785 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 07:18:36,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:36,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 07:18:36,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:18:36,089 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2020-12-22 07:18:36,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:18:36,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 07:18:36,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187420428] [2020-12-22 07:18:36,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:18:36,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:18:36,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:18:36,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:18:36,091 INFO L87 Difference]: Start difference. First operand 10396 states and 12835 transitions. Second operand 8 states. [2020-12-22 07:18:39,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:18:39,625 INFO L93 Difference]: Finished difference Result 20058 states and 25059 transitions. [2020-12-22 07:18:39,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 07:18:39,626 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2020-12-22 07:18:39,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:18:39,639 INFO L225 Difference]: With dead ends: 20058 [2020-12-22 07:18:39,639 INFO L226 Difference]: Without dead ends: 12775 [2020-12-22 07:18:39,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2020-12-22 07:18:39,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12775 states. [2020-12-22 07:18:42,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12775 to 10157. [2020-12-22 07:18:42,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10157 states. [2020-12-22 07:18:42,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10157 states to 10157 states and 12521 transitions. [2020-12-22 07:18:42,152 INFO L78 Accepts]: Start accepts. Automaton has 10157 states and 12521 transitions. Word has length 153 [2020-12-22 07:18:42,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:18:42,152 INFO L481 AbstractCegarLoop]: Abstraction has 10157 states and 12521 transitions. [2020-12-22 07:18:42,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 07:18:42,152 INFO L276 IsEmpty]: Start isEmpty. Operand 10157 states and 12521 transitions. [2020-12-22 07:18:42,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-22 07:18:42,159 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:18:42,159 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:18:42,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:18:42,360 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:18:42,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:18:42,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1055536007, now seen corresponding path program 1 times [2020-12-22 07:18:42,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:18:42,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615246943] [2020-12-22 07:18:42,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:18:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:42,451 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-12-22 07:18:42,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615246943] [2020-12-22 07:18:42,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:18:42,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:18:42,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297265238] [2020-12-22 07:18:42,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:18:42,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:18:42,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:18:42,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:18:42,454 INFO L87 Difference]: Start difference. First operand 10157 states and 12521 transitions. Second operand 4 states. [2020-12-22 07:18:44,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:18:44,030 INFO L93 Difference]: Finished difference Result 16206 states and 19983 transitions. [2020-12-22 07:18:44,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:18:44,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-12-22 07:18:44,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:18:44,041 INFO L225 Difference]: With dead ends: 16206 [2020-12-22 07:18:44,041 INFO L226 Difference]: Without dead ends: 6652 [2020-12-22 07:18:44,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 07:18:44,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6652 states. [2020-12-22 07:18:45,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6652 to 6632. [2020-12-22 07:18:45,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6632 states. [2020-12-22 07:18:45,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6632 states to 6632 states and 8106 transitions. [2020-12-22 07:18:45,641 INFO L78 Accepts]: Start accepts. Automaton has 6632 states and 8106 transitions. Word has length 154 [2020-12-22 07:18:45,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:18:45,642 INFO L481 AbstractCegarLoop]: Abstraction has 6632 states and 8106 transitions. [2020-12-22 07:18:45,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:18:45,642 INFO L276 IsEmpty]: Start isEmpty. Operand 6632 states and 8106 transitions. [2020-12-22 07:18:45,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-22 07:18:45,646 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:18:45,646 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:18:45,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-12-22 07:18:45,661 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:18:45,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:18:45,662 INFO L82 PathProgramCache]: Analyzing trace with hash 797904600, now seen corresponding path program 1 times [2020-12-22 07:18:45,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:18:45,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052254863] [2020-12-22 07:18:45,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:18:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:45,896 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:18:45,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052254863] [2020-12-22 07:18:45,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845455616] [2020-12-22 07:18:45,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 07:18:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:46,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 839 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 07:18:46,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:18:46,389 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:18:46,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:18:46,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2020-12-22 07:18:46,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038498380] [2020-12-22 07:18:46,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 07:18:46,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:18:46,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 07:18:46,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:18:46,390 INFO L87 Difference]: Start difference. First operand 6632 states and 8106 transitions. Second operand 13 states. [2020-12-22 07:19:01,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:19:01,557 INFO L93 Difference]: Finished difference Result 39114 states and 49435 transitions. [2020-12-22 07:19:01,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2020-12-22 07:19:01,558 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 155 [2020-12-22 07:19:01,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:19:01,590 INFO L225 Difference]: With dead ends: 39114 [2020-12-22 07:19:01,590 INFO L226 Difference]: Without dead ends: 34071 [2020-12-22 07:19:01,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7816 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2820, Invalid=16640, Unknown=0, NotChecked=0, Total=19460 [2020-12-22 07:19:01,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34071 states. [2020-12-22 07:19:03,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34071 to 8003. [2020-12-22 07:19:03,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8003 states. [2020-12-22 07:19:03,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8003 states to 8003 states and 9789 transitions. [2020-12-22 07:19:03,790 INFO L78 Accepts]: Start accepts. Automaton has 8003 states and 9789 transitions. Word has length 155 [2020-12-22 07:19:03,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:19:03,790 INFO L481 AbstractCegarLoop]: Abstraction has 8003 states and 9789 transitions. [2020-12-22 07:19:03,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 07:19:03,790 INFO L276 IsEmpty]: Start isEmpty. Operand 8003 states and 9789 transitions. [2020-12-22 07:19:03,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-22 07:19:03,793 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:19:03,793 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:19:03,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-12-22 07:19:03,994 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:19:03,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:19:03,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1281941302, now seen corresponding path program 1 times [2020-12-22 07:19:03,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:19:03,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598441735] [2020-12-22 07:19:03,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:19:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:04,285 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:19:04,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598441735] [2020-12-22 07:19:04,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15116003] [2020-12-22 07:19:04,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 07:19:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:04,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 07:19:04,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:19:04,816 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 20 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:19:04,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:19:04,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 16 [2020-12-22 07:19:04,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029802889] [2020-12-22 07:19:04,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 07:19:04,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:19:04,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 07:19:04,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-12-22 07:19:04,818 INFO L87 Difference]: Start difference. First operand 8003 states and 9789 transitions. Second operand 16 states. [2020-12-22 07:19:31,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:19:31,296 INFO L93 Difference]: Finished difference Result 33360 states and 41748 transitions. [2020-12-22 07:19:31,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2020-12-22 07:19:31,297 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 155 [2020-12-22 07:19:31,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:19:31,326 INFO L225 Difference]: With dead ends: 33360 [2020-12-22 07:19:31,326 INFO L226 Difference]: Without dead ends: 27240 [2020-12-22 07:19:31,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19727 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=6585, Invalid=42035, Unknown=0, NotChecked=0, Total=48620 [2020-12-22 07:19:31,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27240 states. [2020-12-22 07:19:33,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27240 to 7969. [2020-12-22 07:19:33,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7969 states. [2020-12-22 07:19:33,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7969 states to 7969 states and 9701 transitions. [2020-12-22 07:19:33,614 INFO L78 Accepts]: Start accepts. Automaton has 7969 states and 9701 transitions. Word has length 155 [2020-12-22 07:19:33,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:19:33,614 INFO L481 AbstractCegarLoop]: Abstraction has 7969 states and 9701 transitions. [2020-12-22 07:19:33,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 07:19:33,614 INFO L276 IsEmpty]: Start isEmpty. Operand 7969 states and 9701 transitions. [2020-12-22 07:19:33,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-12-22 07:19:33,617 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:19:33,617 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:19:33,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:19:33,818 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:19:33,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:19:33,819 INFO L82 PathProgramCache]: Analyzing trace with hash -2117913928, now seen corresponding path program 1 times [2020-12-22 07:19:33,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:19:33,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043587717] [2020-12-22 07:19:33,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:19:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:34,093 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:19:34,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043587717] [2020-12-22 07:19:34,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401316296] [2020-12-22 07:19:34,094 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 07:19:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:34,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 07:19:34,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:19:34,628 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:19:34,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:19:34,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2020-12-22 07:19:34,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024459944] [2020-12-22 07:19:34,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:19:34,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:19:34,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:19:34,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:19:34,630 INFO L87 Difference]: Start difference. First operand 7969 states and 9701 transitions. Second operand 8 states. [2020-12-22 07:19:41,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:19:41,119 INFO L93 Difference]: Finished difference Result 24203 states and 30392 transitions. [2020-12-22 07:19:41,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 07:19:41,120 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 156 [2020-12-22 07:19:41,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:19:41,137 INFO L225 Difference]: With dead ends: 24203 [2020-12-22 07:19:41,138 INFO L226 Difference]: Without dead ends: 18555 [2020-12-22 07:19:41,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 163 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-12-22 07:19:41,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18555 states. [2020-12-22 07:19:43,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18555 to 7293. [2020-12-22 07:19:43,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7293 states. [2020-12-22 07:19:43,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7293 states to 7293 states and 8867 transitions. [2020-12-22 07:19:43,302 INFO L78 Accepts]: Start accepts. Automaton has 7293 states and 8867 transitions. Word has length 156 [2020-12-22 07:19:43,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:19:43,302 INFO L481 AbstractCegarLoop]: Abstraction has 7293 states and 8867 transitions. [2020-12-22 07:19:43,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 07:19:43,302 INFO L276 IsEmpty]: Start isEmpty. Operand 7293 states and 8867 transitions. [2020-12-22 07:19:43,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-12-22 07:19:43,305 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:19:43,305 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:19:43,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-12-22 07:19:43,506 INFO L429 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:19:43,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:19:43,507 INFO L82 PathProgramCache]: Analyzing trace with hash -201393268, now seen corresponding path program 1 times [2020-12-22 07:19:43,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:19:43,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550289335] [2020-12-22 07:19:43,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:19:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:43,571 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-12-22 07:19:43,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550289335] [2020-12-22 07:19:43,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:19:43,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:19:43,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29639050] [2020-12-22 07:19:43,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:19:43,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:19:43,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:19:43,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:19:43,573 INFO L87 Difference]: Start difference. First operand 7293 states and 8867 transitions. Second operand 4 states. [2020-12-22 07:19:45,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:19:45,396 INFO L93 Difference]: Finished difference Result 12930 states and 15764 transitions. [2020-12-22 07:19:45,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:19:45,397 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2020-12-22 07:19:45,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:19:45,403 INFO L225 Difference]: With dead ends: 12930 [2020-12-22 07:19:45,404 INFO L226 Difference]: Without dead ends: 6051 [2020-12-22 07:19:45,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 07:19:45,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6051 states. [2020-12-22 07:19:47,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6051 to 6051. [2020-12-22 07:19:47,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6051 states. [2020-12-22 07:19:47,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6051 states to 6051 states and 7343 transitions. [2020-12-22 07:19:47,094 INFO L78 Accepts]: Start accepts. Automaton has 6051 states and 7343 transitions. Word has length 156 [2020-12-22 07:19:47,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:19:47,094 INFO L481 AbstractCegarLoop]: Abstraction has 6051 states and 7343 transitions. [2020-12-22 07:19:47,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:19:47,094 INFO L276 IsEmpty]: Start isEmpty. Operand 6051 states and 7343 transitions. [2020-12-22 07:19:47,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 07:19:47,096 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:19:47,096 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:19:47,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-12-22 07:19:47,096 INFO L429 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:19:47,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:19:47,097 INFO L82 PathProgramCache]: Analyzing trace with hash -31688333, now seen corresponding path program 1 times [2020-12-22 07:19:47,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:19:47,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174290101] [2020-12-22 07:19:47,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:19:47,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:47,329 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:19:47,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174290101] [2020-12-22 07:19:47,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687842866] [2020-12-22 07:19:47,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 07:19:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:47,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 07:19:47,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:19:47,990 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:19:47,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:19:47,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 12 [2020-12-22 07:19:47,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824225014] [2020-12-22 07:19:47,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:19:47,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:19:47,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:19:47,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:19:47,992 INFO L87 Difference]: Start difference. First operand 6051 states and 7343 transitions. Second operand 9 states. [2020-12-22 07:19:51,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:19:51,022 INFO L93 Difference]: Finished difference Result 12072 states and 14725 transitions. [2020-12-22 07:19:51,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 07:19:51,024 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2020-12-22 07:19:51,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:19:51,030 INFO L225 Difference]: With dead ends: 12072 [2020-12-22 07:19:51,030 INFO L226 Difference]: Without dead ends: 6707 [2020-12-22 07:19:51,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2020-12-22 07:19:51,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6707 states. [2020-12-22 07:19:52,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6707 to 5593. [2020-12-22 07:19:52,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5593 states. [2020-12-22 07:19:52,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5593 states to 5593 states and 6780 transitions. [2020-12-22 07:19:52,543 INFO L78 Accepts]: Start accepts. Automaton has 5593 states and 6780 transitions. Word has length 157 [2020-12-22 07:19:52,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:19:52,544 INFO L481 AbstractCegarLoop]: Abstraction has 5593 states and 6780 transitions. [2020-12-22 07:19:52,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:19:52,544 INFO L276 IsEmpty]: Start isEmpty. Operand 5593 states and 6780 transitions. [2020-12-22 07:19:52,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-12-22 07:19:52,546 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:19:52,546 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:19:52,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-12-22 07:19:52,747 INFO L429 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:19:52,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:19:52,748 INFO L82 PathProgramCache]: Analyzing trace with hash -457197531, now seen corresponding path program 1 times [2020-12-22 07:19:52,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:19:52,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549971146] [2020-12-22 07:19:52,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:19:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:52,945 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 07:19:52,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549971146] [2020-12-22 07:19:52,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:19:52,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:19:52,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637310311] [2020-12-22 07:19:52,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:19:52,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:19:52,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:19:52,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:19:52,947 INFO L87 Difference]: Start difference. First operand 5593 states and 6780 transitions. Second operand 7 states. [2020-12-22 07:19:55,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:19:55,868 INFO L93 Difference]: Finished difference Result 12544 states and 15542 transitions. [2020-12-22 07:19:55,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:19:55,874 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 158 [2020-12-22 07:19:55,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:19:55,882 INFO L225 Difference]: With dead ends: 12544 [2020-12-22 07:19:55,882 INFO L226 Difference]: Without dead ends: 8469 [2020-12-22 07:19:55,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:19:55,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8469 states. [2020-12-22 07:19:57,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8469 to 5589. [2020-12-22 07:19:57,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5589 states. [2020-12-22 07:19:57,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5589 states to 5589 states and 6768 transitions. [2020-12-22 07:19:57,452 INFO L78 Accepts]: Start accepts. Automaton has 5589 states and 6768 transitions. Word has length 158 [2020-12-22 07:19:57,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:19:57,452 INFO L481 AbstractCegarLoop]: Abstraction has 5589 states and 6768 transitions. [2020-12-22 07:19:57,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:19:57,452 INFO L276 IsEmpty]: Start isEmpty. Operand 5589 states and 6768 transitions. [2020-12-22 07:19:57,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-12-22 07:19:57,454 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:19:57,454 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:19:57,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-12-22 07:19:57,455 INFO L429 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:19:57,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:19:57,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1748682043, now seen corresponding path program 1 times [2020-12-22 07:19:57,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:19:57,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197249091] [2020-12-22 07:19:57,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:19:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:57,660 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 36 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:19:57,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197249091] [2020-12-22 07:19:57,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626212922] [2020-12-22 07:19:57,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 07:19:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:57,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-22 07:19:57,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:19:58,191 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 07:19:58,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:19:58,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2020-12-22 07:19:58,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201911437] [2020-12-22 07:19:58,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:19:58,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:19:58,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:19:58,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-12-22 07:19:58,192 INFO L87 Difference]: Start difference. First operand 5589 states and 6768 transitions. Second operand 6 states. [2020-12-22 07:20:02,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:20:02,047 INFO L93 Difference]: Finished difference Result 15918 states and 19722 transitions. [2020-12-22 07:20:02,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:20:02,048 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-12-22 07:20:02,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:20:02,058 INFO L225 Difference]: With dead ends: 15918 [2020-12-22 07:20:02,058 INFO L226 Difference]: Without dead ends: 11227 [2020-12-22 07:20:02,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-12-22 07:20:02,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11227 states. [2020-12-22 07:20:03,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11227 to 5586. [2020-12-22 07:20:03,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5586 states. [2020-12-22 07:20:03,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5586 states to 5586 states and 6749 transitions. [2020-12-22 07:20:03,852 INFO L78 Accepts]: Start accepts. Automaton has 5586 states and 6749 transitions. Word has length 158 [2020-12-22 07:20:03,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:20:03,852 INFO L481 AbstractCegarLoop]: Abstraction has 5586 states and 6749 transitions. [2020-12-22 07:20:03,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:20:03,852 INFO L276 IsEmpty]: Start isEmpty. Operand 5586 states and 6749 transitions. [2020-12-22 07:20:03,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-12-22 07:20:03,854 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:20:03,854 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:20:04,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-12-22 07:20:04,055 INFO L429 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:20:04,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:20:04,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1965811942, now seen corresponding path program 1 times [2020-12-22 07:20:04,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:20:04,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976892621] [2020-12-22 07:20:04,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:20:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:20:04,266 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 41 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 07:20:04,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976892621] [2020-12-22 07:20:04,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219717562] [2020-12-22 07:20:04,267 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 07:20:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:20:04,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-22 07:20:04,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:20:05,135 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:20:05,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:20:05,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14] total 18 [2020-12-22 07:20:05,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117134171] [2020-12-22 07:20:05,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 07:20:05,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:20:05,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 07:20:05,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2020-12-22 07:20:05,139 INFO L87 Difference]: Start difference. First operand 5586 states and 6749 transitions. Second operand 18 states. [2020-12-22 07:20:11,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:20:11,075 INFO L93 Difference]: Finished difference Result 16318 states and 20097 transitions. [2020-12-22 07:20:11,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-12-22 07:20:11,076 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 159 [2020-12-22 07:20:11,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:20:11,088 INFO L225 Difference]: With dead ends: 16318 [2020-12-22 07:20:11,088 INFO L226 Difference]: Without dead ends: 12232 [2020-12-22 07:20:11,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=523, Invalid=2339, Unknown=0, NotChecked=0, Total=2862 [2020-12-22 07:20:11,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12232 states. [2020-12-22 07:20:13,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12232 to 7244. [2020-12-22 07:20:13,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7244 states. [2020-12-22 07:20:13,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7244 states to 7244 states and 8730 transitions. [2020-12-22 07:20:13,327 INFO L78 Accepts]: Start accepts. Automaton has 7244 states and 8730 transitions. Word has length 159 [2020-12-22 07:20:13,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:20:13,327 INFO L481 AbstractCegarLoop]: Abstraction has 7244 states and 8730 transitions. [2020-12-22 07:20:13,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 07:20:13,328 INFO L276 IsEmpty]: Start isEmpty. Operand 7244 states and 8730 transitions. [2020-12-22 07:20:13,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-12-22 07:20:13,330 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:20:13,330 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:20:13,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2020-12-22 07:20:13,532 INFO L429 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:20:13,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:20:13,533 INFO L82 PathProgramCache]: Analyzing trace with hash 484570666, now seen corresponding path program 1 times [2020-12-22 07:20:13,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:20:13,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423006258] [2020-12-22 07:20:13,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:20:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:20:13,819 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 14 [2020-12-22 07:20:13,874 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:20:13,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423006258] [2020-12-22 07:20:13,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677532654] [2020-12-22 07:20:13,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 07:20:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:20:14,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-22 07:20:14,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:20:14,601 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:20:14,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:20:14,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 17 [2020-12-22 07:20:14,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171445662] [2020-12-22 07:20:14,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 07:20:14,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:20:14,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 07:20:14,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-12-22 07:20:14,603 INFO L87 Difference]: Start difference. First operand 7244 states and 8730 transitions. Second operand 11 states. [2020-12-22 07:20:18,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:20:18,296 INFO L93 Difference]: Finished difference Result 14350 states and 17465 transitions. [2020-12-22 07:20:18,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 07:20:18,296 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 162 [2020-12-22 07:20:18,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:20:18,305 INFO L225 Difference]: With dead ends: 14350 [2020-12-22 07:20:18,306 INFO L226 Difference]: Without dead ends: 8919 [2020-12-22 07:20:18,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=125, Invalid=805, Unknown=0, NotChecked=0, Total=930 [2020-12-22 07:20:18,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8919 states. [2020-12-22 07:20:20,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8919 to 7247. [2020-12-22 07:20:20,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7247 states. [2020-12-22 07:20:20,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7247 states to 7247 states and 8728 transitions. [2020-12-22 07:20:20,583 INFO L78 Accepts]: Start accepts. Automaton has 7247 states and 8728 transitions. Word has length 162 [2020-12-22 07:20:20,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:20:20,583 INFO L481 AbstractCegarLoop]: Abstraction has 7247 states and 8728 transitions. [2020-12-22 07:20:20,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 07:20:20,584 INFO L276 IsEmpty]: Start isEmpty. Operand 7247 states and 8728 transitions. [2020-12-22 07:20:20,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-12-22 07:20:20,586 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:20:20,586 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:20:20,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:20:20,802 INFO L429 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_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 07:20:20,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:20:20,803 INFO L82 PathProgramCache]: Analyzing trace with hash -902214744, now seen corresponding path program 1 times [2020-12-22 07:20:20,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:20:20,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095905289] [2020-12-22 07:20:20,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:20:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:20:21,123 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 14 [2020-12-22 07:20:21,209 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:20:21,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095905289] [2020-12-22 07:20:21,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742529335] [2020-12-22 07:20:21,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-12-22 07:20:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:20:21,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 875 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-22 07:20:21,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:20:21,999 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:20:21,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:20:21,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2020-12-22 07:20:22,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992207356] [2020-12-22 07:20:22,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 07:20:22,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:20:22,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 07:20:22,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:20:22,001 INFO L87 Difference]: Start difference. First operand 7247 states and 8728 transitions. Second operand 13 states. [2020-12-22 07:20:26,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:20:26,016 INFO L93 Difference]: Finished difference Result 14169 states and 17308 transitions. [2020-12-22 07:20:26,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 07:20:26,016 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 162 [2020-12-22 07:20:26,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:20:26,025 INFO L225 Difference]: With dead ends: 14169 [2020-12-22 07:20:26,025 INFO L226 Difference]: Without dead ends: 8583 [2020-12-22 07:20:26,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 154 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2020-12-22 07:20:26,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8583 states. [2020-12-22 07:20:28,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8583 to 6313. [2020-12-22 07:20:28,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6313 states. [2020-12-22 07:20:28,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6313 states to 6313 states and 7625 transitions. [2020-12-22 07:20:28,052 INFO L78 Accepts]: Start accepts. Automaton has 6313 states and 7625 transitions. Word has length 162 [2020-12-22 07:20:28,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:20:28,052 INFO L481 AbstractCegarLoop]: Abstraction has 6313 states and 7625 transitions. [2020-12-22 07:20:28,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 07:20:28,052 INFO L276 IsEmpty]: Start isEmpty. Operand 6313 states and 7625 transitions. [2020-12-22 07:20:28,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-12-22 07:20:28,055 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:20:28,055 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]