/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:31:03,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:31:03,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:31:03,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:31:03,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:31:03,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:31:03,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:31:03,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:31:03,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:31:03,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:31:03,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:31:03,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:31:03,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:31:03,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:31:03,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:31:03,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:31:03,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:31:03,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:31:03,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:31:03,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:31:03,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:31:03,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:31:03,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:31:03,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:31:03,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:31:03,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:31:03,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:31:03,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:31:03,665 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:31:03,693 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:31:03,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:31:03,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:31:03,696 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:31:03,696 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:31:03,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:31:03,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:31:03,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:31:03,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:31:03,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:31:03,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:31:03,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:31:03,698 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:31:03,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:31:03,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:31:03,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:31:03,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:31:03,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:31:03,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:31:03,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:31:03,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:31:03,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:31:03,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:31:03,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:31:03,702 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:31:03,702 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:31:04,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:31:04,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:31:04,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:31:04,123 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:31:04,123 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:31:04,124 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound20.c [2020-12-22 05:31:04,203 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a93428d1c/e3faf249a6ac4b9d93db7b55d7082e8b/FLAG65991cbe4 [2020-12-22 05:31:04,821 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:31:04,822 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound20.c [2020-12-22 05:31:04,832 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a93428d1c/e3faf249a6ac4b9d93db7b55d7082e8b/FLAG65991cbe4 [2020-12-22 05:31:05,158 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a93428d1c/e3faf249a6ac4b9d93db7b55d7082e8b [2020-12-22 05:31:05,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:31:05,167 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:31:05,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:31:05,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:31:05,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:31:05,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:31:05" (1/1) ... [2020-12-22 05:31:05,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16de1bf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:31:05, skipping insertion in model container [2020-12-22 05:31:05,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:31:05" (1/1) ... [2020-12-22 05:31:05,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:31:05,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:31:05,438 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/nla-digbench-scaling/hard2_unwindbound20.c[526,539] [2020-12-22 05:31:05,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:31:05,486 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:31:05,505 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/nla-digbench-scaling/hard2_unwindbound20.c[526,539] [2020-12-22 05:31:05,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:31:05,533 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:31:05,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:31:05 WrapperNode [2020-12-22 05:31:05,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:31:05,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:31:05,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:31:05,535 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:31:05,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:31:05" (1/1) ... [2020-12-22 05:31:05,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:31:05" (1/1) ... [2020-12-22 05:31:05,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:31:05,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:31:05,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:31:05,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:31:05,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:31:05" (1/1) ... [2020-12-22 05:31:05,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:31:05" (1/1) ... [2020-12-22 05:31:05,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:31:05" (1/1) ... [2020-12-22 05:31:05,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:31:05" (1/1) ... [2020-12-22 05:31:05,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:31:05" (1/1) ... [2020-12-22 05:31:05,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:31:05" (1/1) ... [2020-12-22 05:31:05,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:31:05" (1/1) ... [2020-12-22 05:31:05,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:31:05,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:31:05,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:31:05,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:31:05,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:31:05" (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 05:31:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:31:05,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:31:05,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:31:05,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:31:06,083 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:31:06,084 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2020-12-22 05:31:06,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:31:06 BoogieIcfgContainer [2020-12-22 05:31:06,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:31:06,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:31:06,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:31:06,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:31:06,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:31:05" (1/3) ... [2020-12-22 05:31:06,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60aa49d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:31:06, skipping insertion in model container [2020-12-22 05:31:06,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:31:05" (2/3) ... [2020-12-22 05:31:06,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60aa49d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:31:06, skipping insertion in model container [2020-12-22 05:31:06,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:31:06" (3/3) ... [2020-12-22 05:31:06,112 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_unwindbound20.c [2020-12-22 05:31:06,120 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:31:06,131 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 05:31:06,178 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 05:31:06,218 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:31:06,218 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:31:06,218 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:31:06,218 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:31:06,219 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:31:06,219 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:31:06,219 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:31:06,219 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:31:06,238 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-12-22 05:31:06,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 05:31:06,244 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:06,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 05:31:06,245 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:06,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:06,253 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-22 05:31:06,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:06,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046799293] [2020-12-22 05:31:06,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:06,488 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 05:31:06,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046799293] [2020-12-22 05:31:06,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:31:06,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:31:06,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847986329] [2020-12-22 05:31:06,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:31:06,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:06,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:31:06,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:31:06,524 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2020-12-22 05:31:06,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:06,700 INFO L93 Difference]: Finished difference Result 102 states and 139 transitions. [2020-12-22 05:31:06,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:31:06,702 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-22 05:31:06,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:06,716 INFO L225 Difference]: With dead ends: 102 [2020-12-22 05:31:06,717 INFO L226 Difference]: Without dead ends: 57 [2020-12-22 05:31:06,722 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 05:31:06,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-22 05:31:06,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 33. [2020-12-22 05:31:06,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-22 05:31:06,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-12-22 05:31:06,779 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2020-12-22 05:31:06,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:06,780 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-12-22 05:31:06,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:31:06,780 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-12-22 05:31:06,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 05:31:06,782 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:06,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:06,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:31:06,786 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:06,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:06,791 INFO L82 PathProgramCache]: Analyzing trace with hash 178921133, now seen corresponding path program 1 times [2020-12-22 05:31:06,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:06,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671915225] [2020-12-22 05:31:06,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:06,837 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:06,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [859852315] [2020-12-22 05:31:06,838 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 05:31:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:06,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 05:31:06,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:06,974 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 05:31:06,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671915225] [2020-12-22 05:31:06,975 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:06,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859852315] [2020-12-22 05:31:06,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:31:06,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:31:06,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560467675] [2020-12-22 05:31:06,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:31:06,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:06,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:31:06,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:31:06,979 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-12-22 05:31:06,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:06,998 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-12-22 05:31:06,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:31:06,998 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-22 05:31:06,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:07,001 INFO L225 Difference]: With dead ends: 54 [2020-12-22 05:31:07,001 INFO L226 Difference]: Without dead ends: 35 [2020-12-22 05:31:07,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:31:07,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-22 05:31:07,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-12-22 05:31:07,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-22 05:31:07,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-22 05:31:07,010 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-12-22 05:31:07,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:07,010 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-22 05:31:07,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:31:07,011 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-22 05:31:07,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 05:31:07,011 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:07,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:07,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 05:31:07,225 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:07,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:07,227 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2020-12-22 05:31:07,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:07,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319514982] [2020-12-22 05:31:07,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:07,330 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 05:31:07,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319514982] [2020-12-22 05:31:07,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:31:07,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:31:07,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288260682] [2020-12-22 05:31:07,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:31:07,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:07,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:31:07,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:31:07,334 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-12-22 05:31:07,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:07,450 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-12-22 05:31:07,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:31:07,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-22 05:31:07,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:07,452 INFO L225 Difference]: With dead ends: 54 [2020-12-22 05:31:07,452 INFO L226 Difference]: Without dead ends: 52 [2020-12-22 05:31:07,453 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 05:31:07,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-22 05:31:07,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2020-12-22 05:31:07,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-22 05:31:07,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-12-22 05:31:07,467 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 8 [2020-12-22 05:31:07,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:07,469 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-12-22 05:31:07,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:31:07,469 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-12-22 05:31:07,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 05:31:07,472 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:07,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:07,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:31:07,473 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:07,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:07,473 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2020-12-22 05:31:07,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:07,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953386335] [2020-12-22 05:31:07,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:07,505 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:07,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1723460425] [2020-12-22 05:31:07,507 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 05:31:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:07,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 05:31:07,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:07,660 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 05:31:07,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953386335] [2020-12-22 05:31:07,661 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:07,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723460425] [2020-12-22 05:31:07,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:31:07,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:31:07,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331358439] [2020-12-22 05:31:07,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:31:07,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:07,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:31:07,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:31:07,663 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 6 states. [2020-12-22 05:31:07,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:07,807 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2020-12-22 05:31:07,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:31:07,808 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-22 05:31:07,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:07,810 INFO L225 Difference]: With dead ends: 79 [2020-12-22 05:31:07,810 INFO L226 Difference]: Without dead ends: 56 [2020-12-22 05:31:07,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:31:07,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-22 05:31:07,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2020-12-22 05:31:07,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-22 05:31:07,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-12-22 05:31:07,833 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 10 [2020-12-22 05:31:07,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:07,834 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-12-22 05:31:07,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:31:07,834 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-12-22 05:31:07,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 05:31:07,836 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:07,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:08,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:08,050 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:08,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:08,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1265846374, now seen corresponding path program 1 times [2020-12-22 05:31:08,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:08,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420278307] [2020-12-22 05:31:08,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:08,064 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:08,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [298226703] [2020-12-22 05:31:08,065 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 05:31:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:08,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:31:08,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:08,172 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 05:31:08,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420278307] [2020-12-22 05:31:08,173 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:08,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298226703] [2020-12-22 05:31:08,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:31:08,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:31:08,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337603058] [2020-12-22 05:31:08,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:31:08,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:08,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:31:08,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:31:08,176 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 5 states. [2020-12-22 05:31:08,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:08,228 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2020-12-22 05:31:08,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:31:08,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-22 05:31:08,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:08,229 INFO L225 Difference]: With dead ends: 66 [2020-12-22 05:31:08,229 INFO L226 Difference]: Without dead ends: 54 [2020-12-22 05:31:08,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:31:08,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-22 05:31:08,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2020-12-22 05:31:08,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-22 05:31:08,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-12-22 05:31:08,237 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 14 [2020-12-22 05:31:08,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:08,238 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-12-22 05:31:08,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:31:08,238 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-12-22 05:31:08,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 05:31:08,239 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:08,239 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:08,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:08,453 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:08,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:08,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1486360258, now seen corresponding path program 1 times [2020-12-22 05:31:08,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:08,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619567500] [2020-12-22 05:31:08,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:08,477 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:08,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2022776099] [2020-12-22 05:31:08,477 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 05:31:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:08,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 05:31:08,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:08,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:08,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619567500] [2020-12-22 05:31:08,585 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:08,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022776099] [2020-12-22 05:31:08,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:08,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-22 05:31:08,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919470564] [2020-12-22 05:31:08,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:31:08,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:08,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:31:08,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:31:08,589 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 5 states. [2020-12-22 05:31:08,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:08,620 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2020-12-22 05:31:08,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:31:08,621 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-22 05:31:08,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:08,621 INFO L225 Difference]: With dead ends: 78 [2020-12-22 05:31:08,622 INFO L226 Difference]: Without dead ends: 50 [2020-12-22 05:31:08,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:31:08,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-22 05:31:08,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-12-22 05:31:08,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-22 05:31:08,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-12-22 05:31:08,629 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 18 [2020-12-22 05:31:08,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:08,630 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-12-22 05:31:08,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:31:08,630 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-12-22 05:31:08,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 05:31:08,631 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:08,631 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:08,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:08,848 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:08,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:08,849 INFO L82 PathProgramCache]: Analyzing trace with hash -2100512702, now seen corresponding path program 1 times [2020-12-22 05:31:08,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:08,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674799097] [2020-12-22 05:31:08,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:08,865 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:08,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [220408093] [2020-12-22 05:31:08,869 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 05:31:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:08,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 05:31:08,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:09,011 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:09,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674799097] [2020-12-22 05:31:09,011 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:09,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220408093] [2020-12-22 05:31:09,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:09,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:31:09,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996631831] [2020-12-22 05:31:09,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:31:09,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:09,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:31:09,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:31:09,014 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 7 states. [2020-12-22 05:31:09,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:09,184 INFO L93 Difference]: Finished difference Result 117 states and 141 transitions. [2020-12-22 05:31:09,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:31:09,184 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-22 05:31:09,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:09,185 INFO L225 Difference]: With dead ends: 117 [2020-12-22 05:31:09,186 INFO L226 Difference]: Without dead ends: 77 [2020-12-22 05:31:09,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:31:09,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-22 05:31:09,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 63. [2020-12-22 05:31:09,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-22 05:31:09,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2020-12-22 05:31:09,197 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 18 [2020-12-22 05:31:09,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:09,197 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2020-12-22 05:31:09,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:31:09,197 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2020-12-22 05:31:09,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 05:31:09,198 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:09,199 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:09,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 05:31:09,412 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:09,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:09,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1057713026, now seen corresponding path program 1 times [2020-12-22 05:31:09,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:09,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367697906] [2020-12-22 05:31:09,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:09,425 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:09,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1618786985] [2020-12-22 05:31:09,426 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 05:31:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:09,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:31:09,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:09,545 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:09,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367697906] [2020-12-22 05:31:09,546 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:09,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618786985] [2020-12-22 05:31:09,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:09,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:31:09,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541762475] [2020-12-22 05:31:09,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:31:09,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:09,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:31:09,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:31:09,549 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand 6 states. [2020-12-22 05:31:09,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:09,569 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2020-12-22 05:31:09,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:31:09,569 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-12-22 05:31:09,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:09,571 INFO L225 Difference]: With dead ends: 70 [2020-12-22 05:31:09,571 INFO L226 Difference]: Without dead ends: 64 [2020-12-22 05:31:09,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:31:09,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-22 05:31:09,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-12-22 05:31:09,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-22 05:31:09,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2020-12-22 05:31:09,579 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 25 [2020-12-22 05:31:09,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:09,580 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2020-12-22 05:31:09,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:31:09,580 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2020-12-22 05:31:09,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 05:31:09,581 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:09,581 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:09,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:09,796 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:09,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:09,797 INFO L82 PathProgramCache]: Analyzing trace with hash 998694484, now seen corresponding path program 2 times [2020-12-22 05:31:09,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:09,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19920659] [2020-12-22 05:31:09,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:09,808 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:09,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [879399967] [2020-12-22 05:31:09,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 05:31:09,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 05:31:09,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:09,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 05:31:09,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:09,914 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 05:31:09,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19920659] [2020-12-22 05:31:09,915 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:09,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879399967] [2020-12-22 05:31:09,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:31:09,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:31:09,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873728800] [2020-12-22 05:31:09,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:31:09,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:09,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:31:09,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:31:09,919 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 5 states. [2020-12-22 05:31:09,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:09,962 INFO L93 Difference]: Finished difference Result 99 states and 114 transitions. [2020-12-22 05:31:09,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:31:09,962 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-12-22 05:31:09,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:09,965 INFO L225 Difference]: With dead ends: 99 [2020-12-22 05:31:09,965 INFO L226 Difference]: Without dead ends: 71 [2020-12-22 05:31:09,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:31:09,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-22 05:31:09,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2020-12-22 05:31:09,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-22 05:31:09,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2020-12-22 05:31:09,982 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 26 [2020-12-22 05:31:09,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:09,982 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2020-12-22 05:31:09,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:31:09,982 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2020-12-22 05:31:09,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 05:31:09,983 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:09,983 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-12-22 05:31:10,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:10,198 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:10,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:10,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1706788820, now seen corresponding path program 2 times [2020-12-22 05:31:10,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:10,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016461809] [2020-12-22 05:31:10,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:10,211 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:10,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [791645404] [2020-12-22 05:31:10,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:10,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:31:10,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:10,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-22 05:31:10,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:10,390 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:10,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016461809] [2020-12-22 05:31:10,390 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:10,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791645404] [2020-12-22 05:31:10,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:10,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:31:10,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095807732] [2020-12-22 05:31:10,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:31:10,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:10,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:31:10,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:31:10,392 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand 8 states. [2020-12-22 05:31:10,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:10,603 INFO L93 Difference]: Finished difference Result 138 states and 160 transitions. [2020-12-22 05:31:10,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:31:10,603 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-12-22 05:31:10,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:10,606 INFO L225 Difference]: With dead ends: 138 [2020-12-22 05:31:10,606 INFO L226 Difference]: Without dead ends: 124 [2020-12-22 05:31:10,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:31:10,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-22 05:31:10,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 92. [2020-12-22 05:31:10,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-22 05:31:10,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 108 transitions. [2020-12-22 05:31:10,623 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 108 transitions. Word has length 26 [2020-12-22 05:31:10,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:10,623 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 108 transitions. [2020-12-22 05:31:10,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:31:10,624 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 108 transitions. [2020-12-22 05:31:10,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 05:31:10,624 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:10,625 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:10,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 05:31:10,826 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:10,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:10,827 INFO L82 PathProgramCache]: Analyzing trace with hash 864374201, now seen corresponding path program 1 times [2020-12-22 05:31:10,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:10,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365315290] [2020-12-22 05:31:10,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:10,839 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:10,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339079947] [2020-12-22 05:31:10,839 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 05:31:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:10,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:31:10,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:10,942 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:10,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365315290] [2020-12-22 05:31:10,942 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:10,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339079947] [2020-12-22 05:31:10,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:10,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:31:10,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531978889] [2020-12-22 05:31:10,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:31:10,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:10,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:31:10,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:31:10,945 INFO L87 Difference]: Start difference. First operand 92 states and 108 transitions. Second operand 6 states. [2020-12-22 05:31:10,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:10,987 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2020-12-22 05:31:10,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:31:10,988 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-22 05:31:10,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:10,989 INFO L225 Difference]: With dead ends: 100 [2020-12-22 05:31:10,989 INFO L226 Difference]: Without dead ends: 92 [2020-12-22 05:31:10,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:31:10,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-22 05:31:10,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-12-22 05:31:10,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-22 05:31:10,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 107 transitions. [2020-12-22 05:31:10,999 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 107 transitions. Word has length 27 [2020-12-22 05:31:10,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:11,000 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 107 transitions. [2020-12-22 05:31:11,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:31:11,000 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 107 transitions. [2020-12-22 05:31:11,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 05:31:11,001 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:11,001 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:11,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:11,215 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:11,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:11,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1388472819, now seen corresponding path program 1 times [2020-12-22 05:31:11,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:11,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554185593] [2020-12-22 05:31:11,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:11,226 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:11,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [451993943] [2020-12-22 05:31:11,226 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 05:31:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:11,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-22 05:31:11,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:11,417 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:11,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554185593] [2020-12-22 05:31:11,417 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:11,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451993943] [2020-12-22 05:31:11,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:11,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:31:11,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664388569] [2020-12-22 05:31:11,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:31:11,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:11,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:31:11,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:31:11,421 INFO L87 Difference]: Start difference. First operand 92 states and 107 transitions. Second operand 7 states. [2020-12-22 05:31:11,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:11,590 INFO L93 Difference]: Finished difference Result 114 states and 132 transitions. [2020-12-22 05:31:11,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:31:11,592 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-12-22 05:31:11,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:11,594 INFO L225 Difference]: With dead ends: 114 [2020-12-22 05:31:11,594 INFO L226 Difference]: Without dead ends: 112 [2020-12-22 05:31:11,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:31:11,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-12-22 05:31:11,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 99. [2020-12-22 05:31:11,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-22 05:31:11,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2020-12-22 05:31:11,622 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 29 [2020-12-22 05:31:11,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:11,622 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2020-12-22 05:31:11,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:31:11,622 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2020-12-22 05:31:11,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 05:31:11,628 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:11,628 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:11,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:11,829 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:11,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:11,830 INFO L82 PathProgramCache]: Analyzing trace with hash -93011142, now seen corresponding path program 1 times [2020-12-22 05:31:11,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:11,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210691861] [2020-12-22 05:31:11,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:11,841 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:11,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [221080840] [2020-12-22 05:31:11,841 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 05:31:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:11,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 05:31:11,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:11,968 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:11,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210691861] [2020-12-22 05:31:11,968 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:11,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221080840] [2020-12-22 05:31:11,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:11,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 05:31:11,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990778471] [2020-12-22 05:31:11,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:31:11,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:11,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:31:11,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:31:11,970 INFO L87 Difference]: Start difference. First operand 99 states and 118 transitions. Second operand 7 states. [2020-12-22 05:31:12,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:12,002 INFO L93 Difference]: Finished difference Result 112 states and 131 transitions. [2020-12-22 05:31:12,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:31:12,002 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-12-22 05:31:12,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:12,003 INFO L225 Difference]: With dead ends: 112 [2020-12-22 05:31:12,003 INFO L226 Difference]: Without dead ends: 102 [2020-12-22 05:31:12,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:31:12,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-22 05:31:12,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-12-22 05:31:12,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-22 05:31:12,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 119 transitions. [2020-12-22 05:31:12,012 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 119 transitions. Word has length 30 [2020-12-22 05:31:12,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:12,013 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 119 transitions. [2020-12-22 05:31:12,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:31:12,013 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 119 transitions. [2020-12-22 05:31:12,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:31:12,014 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:12,014 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:12,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 05:31:12,229 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:12,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:12,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1412607120, now seen corresponding path program 1 times [2020-12-22 05:31:12,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:12,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145725869] [2020-12-22 05:31:12,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:12,239 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:12,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [870862151] [2020-12-22 05:31:12,240 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 05:31:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:12,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 05:31:12,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:12,409 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:12,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145725869] [2020-12-22 05:31:12,409 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:12,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870862151] [2020-12-22 05:31:12,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:12,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:31:12,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475521173] [2020-12-22 05:31:12,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:31:12,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:12,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:31:12,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:31:12,411 INFO L87 Difference]: Start difference. First operand 101 states and 119 transitions. Second operand 8 states. [2020-12-22 05:31:12,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:12,558 INFO L93 Difference]: Finished difference Result 130 states and 152 transitions. [2020-12-22 05:31:12,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:31:12,558 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-22 05:31:12,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:12,559 INFO L225 Difference]: With dead ends: 130 [2020-12-22 05:31:12,559 INFO L226 Difference]: Without dead ends: 102 [2020-12-22 05:31:12,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:31:12,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-22 05:31:12,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-12-22 05:31:12,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-22 05:31:12,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-12-22 05:31:12,576 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 31 [2020-12-22 05:31:12,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:12,577 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-12-22 05:31:12,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:31:12,577 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-12-22 05:31:12,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 05:31:12,583 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:12,584 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2020-12-22 05:31:12,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 05:31:12,785 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:12,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:12,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1601348966, now seen corresponding path program 3 times [2020-12-22 05:31:12,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:12,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918685581] [2020-12-22 05:31:12,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:12,797 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:12,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [905216457] [2020-12-22 05:31:12,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 05:31:12,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 05:31:12,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:12,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-22 05:31:12,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:13,025 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 05:31:13,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918685581] [2020-12-22 05:31:13,025 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:13,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905216457] [2020-12-22 05:31:13,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:13,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:31:13,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843590710] [2020-12-22 05:31:13,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:31:13,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:13,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:31:13,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:31:13,027 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 9 states. [2020-12-22 05:31:13,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:13,273 INFO L93 Difference]: Finished difference Result 122 states and 136 transitions. [2020-12-22 05:31:13,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:31:13,274 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-12-22 05:31:13,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:13,275 INFO L225 Difference]: With dead ends: 122 [2020-12-22 05:31:13,275 INFO L226 Difference]: Without dead ends: 112 [2020-12-22 05:31:13,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2020-12-22 05:31:13,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-12-22 05:31:13,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 96. [2020-12-22 05:31:13,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-22 05:31:13,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 109 transitions. [2020-12-22 05:31:13,287 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 109 transitions. Word has length 34 [2020-12-22 05:31:13,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:13,287 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 109 transitions. [2020-12-22 05:31:13,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:31:13,287 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 109 transitions. [2020-12-22 05:31:13,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 05:31:13,288 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:13,288 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:13,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 05:31:13,503 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:13,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:13,504 INFO L82 PathProgramCache]: Analyzing trace with hash 894098064, now seen corresponding path program 1 times [2020-12-22 05:31:13,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:13,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713987370] [2020-12-22 05:31:13,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:13,514 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:13,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442246150] [2020-12-22 05:31:13,515 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 05:31:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:13,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-22 05:31:13,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:13,688 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:13,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713987370] [2020-12-22 05:31:13,688 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:13,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442246150] [2020-12-22 05:31:13,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:13,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:31:13,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599486131] [2020-12-22 05:31:13,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:31:13,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:13,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:31:13,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:31:13,690 INFO L87 Difference]: Start difference. First operand 96 states and 109 transitions. Second operand 8 states. [2020-12-22 05:31:13,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:13,824 INFO L93 Difference]: Finished difference Result 98 states and 110 transitions. [2020-12-22 05:31:13,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:31:13,824 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-12-22 05:31:13,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:13,825 INFO L225 Difference]: With dead ends: 98 [2020-12-22 05:31:13,825 INFO L226 Difference]: Without dead ends: 81 [2020-12-22 05:31:13,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:31:13,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-22 05:31:13,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-12-22 05:31:13,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-22 05:31:13,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2020-12-22 05:31:13,836 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 34 [2020-12-22 05:31:13,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:13,836 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2020-12-22 05:31:13,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:31:13,837 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2020-12-22 05:31:13,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 05:31:13,837 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:13,837 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:14,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:14,051 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:14,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:14,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1890706023, now seen corresponding path program 2 times [2020-12-22 05:31:14,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:14,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389519257] [2020-12-22 05:31:14,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:14,063 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:14,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1351862585] [2020-12-22 05:31:14,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:14,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:31:14,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:14,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 05:31:14,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:14,180 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:14,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389519257] [2020-12-22 05:31:14,182 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:14,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351862585] [2020-12-22 05:31:14,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:14,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 05:31:14,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331222555] [2020-12-22 05:31:14,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:31:14,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:14,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:31:14,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:31:14,187 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand 7 states. [2020-12-22 05:31:14,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:14,231 INFO L93 Difference]: Finished difference Result 91 states and 103 transitions. [2020-12-22 05:31:14,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:31:14,231 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-12-22 05:31:14,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:14,232 INFO L225 Difference]: With dead ends: 91 [2020-12-22 05:31:14,232 INFO L226 Difference]: Without dead ends: 83 [2020-12-22 05:31:14,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:31:14,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-22 05:31:14,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-12-22 05:31:14,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-22 05:31:14,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2020-12-22 05:31:14,242 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 35 [2020-12-22 05:31:14,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:14,242 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2020-12-22 05:31:14,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:31:14,242 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2020-12-22 05:31:14,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:31:14,243 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:14,243 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:14,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 05:31:14,459 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:14,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:14,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1368897339, now seen corresponding path program 2 times [2020-12-22 05:31:14,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:14,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095834299] [2020-12-22 05:31:14,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:14,469 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:14,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [256670707] [2020-12-22 05:31:14,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 05:31:14,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:31:14,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:14,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-22 05:31:14,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:14,669 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:14,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095834299] [2020-12-22 05:31:14,669 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:14,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256670707] [2020-12-22 05:31:14,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:14,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:31:14,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693483834] [2020-12-22 05:31:14,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:31:14,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:14,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:31:14,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:31:14,676 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand 8 states. [2020-12-22 05:31:14,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:14,948 INFO L93 Difference]: Finished difference Result 151 states and 175 transitions. [2020-12-22 05:31:14,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:31:14,949 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2020-12-22 05:31:14,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:14,950 INFO L225 Difference]: With dead ends: 151 [2020-12-22 05:31:14,950 INFO L226 Difference]: Without dead ends: 115 [2020-12-22 05:31:14,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:31:14,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-22 05:31:14,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 97. [2020-12-22 05:31:14,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-22 05:31:14,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 112 transitions. [2020-12-22 05:31:14,962 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 112 transitions. Word has length 37 [2020-12-22 05:31:14,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:14,962 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 112 transitions. [2020-12-22 05:31:14,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:31:14,963 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 112 transitions. [2020-12-22 05:31:14,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 05:31:14,963 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:14,963 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:15,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 05:31:15,179 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:15,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:15,180 INFO L82 PathProgramCache]: Analyzing trace with hash -513882164, now seen corresponding path program 2 times [2020-12-22 05:31:15,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:15,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703705445] [2020-12-22 05:31:15,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:15,189 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:15,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [190370974] [2020-12-22 05:31:15,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 05:31:15,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:31:15,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:15,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 05:31:15,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:15,316 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:15,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703705445] [2020-12-22 05:31:15,316 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:15,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190370974] [2020-12-22 05:31:15,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:15,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:31:15,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758346742] [2020-12-22 05:31:15,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:31:15,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:15,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:31:15,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:31:15,318 INFO L87 Difference]: Start difference. First operand 97 states and 112 transitions. Second operand 8 states. [2020-12-22 05:31:15,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:15,354 INFO L93 Difference]: Finished difference Result 116 states and 132 transitions. [2020-12-22 05:31:15,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:31:15,354 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-12-22 05:31:15,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:15,355 INFO L225 Difference]: With dead ends: 116 [2020-12-22 05:31:15,356 INFO L226 Difference]: Without dead ends: 106 [2020-12-22 05:31:15,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:31:15,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-22 05:31:15,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-12-22 05:31:15,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-12-22 05:31:15,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 119 transitions. [2020-12-22 05:31:15,366 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 119 transitions. Word has length 38 [2020-12-22 05:31:15,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:15,366 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 119 transitions. [2020-12-22 05:31:15,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:31:15,366 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 119 transitions. [2020-12-22 05:31:15,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 05:31:15,367 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:15,367 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:15,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:15,581 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:15,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:15,582 INFO L82 PathProgramCache]: Analyzing trace with hash 411953429, now seen corresponding path program 3 times [2020-12-22 05:31:15,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:15,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522148490] [2020-12-22 05:31:15,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:15,589 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:15,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [724590391] [2020-12-22 05:31:15,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 05:31:15,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-12-22 05:31:15,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:15,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 05:31:15,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:15,716 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:15,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522148490] [2020-12-22 05:31:15,716 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:15,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724590391] [2020-12-22 05:31:15,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:15,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:31:15,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118306377] [2020-12-22 05:31:15,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:31:15,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:15,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:31:15,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:31:15,718 INFO L87 Difference]: Start difference. First operand 105 states and 119 transitions. Second operand 8 states. [2020-12-22 05:31:15,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:15,782 INFO L93 Difference]: Finished difference Result 115 states and 129 transitions. [2020-12-22 05:31:15,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:31:15,782 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-12-22 05:31:15,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:15,784 INFO L225 Difference]: With dead ends: 115 [2020-12-22 05:31:15,784 INFO L226 Difference]: Without dead ends: 107 [2020-12-22 05:31:15,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:31:15,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-22 05:31:15,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-12-22 05:31:15,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-22 05:31:15,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 121 transitions. [2020-12-22 05:31:15,794 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 121 transitions. Word has length 43 [2020-12-22 05:31:15,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:15,795 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 121 transitions. [2020-12-22 05:31:15,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:31:15,795 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 121 transitions. [2020-12-22 05:31:15,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 05:31:15,795 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:15,795 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-12-22 05:31:15,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:15,997 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:15,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:15,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1687535646, now seen corresponding path program 3 times [2020-12-22 05:31:15,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:15,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579540211] [2020-12-22 05:31:15,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:16,016 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:16,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2118536395] [2020-12-22 05:31:16,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:16,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 05:31:16,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:16,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 42 conjunts are in the unsatisfiable core [2020-12-22 05:31:16,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:16,259 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:31:16,274 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 05:31:16,282 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 05:31:16,299 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 05:31:16,301 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 05:31:16,306 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 05:31:16,314 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 05:31:16,317 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 05:31:16,330 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 05:31:16,338 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 05:31:16,346 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 05:31:16,348 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 05:31:16,353 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 05:31:16,359 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 05:31:16,362 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 05:31:16,835 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 05:31:16,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579540211] [2020-12-22 05:31:16,836 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:16,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118536395] [2020-12-22 05:31:16,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:16,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:31:16,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437717708] [2020-12-22 05:31:16,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:31:16,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:16,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:31:16,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:31:16,837 INFO L87 Difference]: Start difference. First operand 107 states and 121 transitions. Second operand 10 states. [2020-12-22 05:31:17,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:17,030 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2020-12-22 05:31:17,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:31:17,031 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-12-22 05:31:17,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:17,032 INFO L225 Difference]: With dead ends: 111 [2020-12-22 05:31:17,032 INFO L226 Difference]: Without dead ends: 109 [2020-12-22 05:31:17,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:31:17,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-22 05:31:17,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 98. [2020-12-22 05:31:17,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-22 05:31:17,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2020-12-22 05:31:17,043 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 44 [2020-12-22 05:31:17,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:17,043 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2020-12-22 05:31:17,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:31:17,043 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2020-12-22 05:31:17,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 05:31:17,044 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:17,044 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:17,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:17,260 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:17,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:17,261 INFO L82 PathProgramCache]: Analyzing trace with hash 773970761, now seen corresponding path program 3 times [2020-12-22 05:31:17,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:17,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844265503] [2020-12-22 05:31:17,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:17,269 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:17,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1772151670] [2020-12-22 05:31:17,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 05:31:17,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 05:31:17,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:17,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 05:31:17,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:17,438 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:17,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844265503] [2020-12-22 05:31:17,455 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:17,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772151670] [2020-12-22 05:31:17,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:17,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:31:17,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443685661] [2020-12-22 05:31:17,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:31:17,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:17,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:31:17,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:31:17,458 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand 9 states. [2020-12-22 05:31:17,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:17,506 INFO L93 Difference]: Finished difference Result 127 states and 143 transitions. [2020-12-22 05:31:17,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:31:17,509 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-12-22 05:31:17,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:17,510 INFO L225 Difference]: With dead ends: 127 [2020-12-22 05:31:17,510 INFO L226 Difference]: Without dead ends: 117 [2020-12-22 05:31:17,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:31:17,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-12-22 05:31:17,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2020-12-22 05:31:17,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-22 05:31:17,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 130 transitions. [2020-12-22 05:31:17,521 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 130 transitions. Word has length 45 [2020-12-22 05:31:17,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:17,521 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 130 transitions. [2020-12-22 05:31:17,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:31:17,521 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 130 transitions. [2020-12-22 05:31:17,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 05:31:17,522 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:17,522 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:17,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 05:31:17,736 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:17,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:17,736 INFO L82 PathProgramCache]: Analyzing trace with hash 494883615, now seen corresponding path program 2 times [2020-12-22 05:31:17,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:17,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52667829] [2020-12-22 05:31:17,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:17,746 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:17,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [961931180] [2020-12-22 05:31:17,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:17,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 05:31:17,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:17,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 05:31:17,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:17,937 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-12-22 05:31:17,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52667829] [2020-12-22 05:31:17,937 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:17,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961931180] [2020-12-22 05:31:17,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:17,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:31:17,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293811998] [2020-12-22 05:31:17,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:31:17,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:17,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:31:17,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:31:17,941 INFO L87 Difference]: Start difference. First operand 116 states and 130 transitions. Second operand 11 states. [2020-12-22 05:31:18,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:18,284 INFO L93 Difference]: Finished difference Result 132 states and 144 transitions. [2020-12-22 05:31:18,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:31:18,284 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-12-22 05:31:18,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:18,285 INFO L225 Difference]: With dead ends: 132 [2020-12-22 05:31:18,286 INFO L226 Difference]: Without dead ends: 120 [2020-12-22 05:31:18,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:31:18,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-12-22 05:31:18,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 108. [2020-12-22 05:31:18,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-22 05:31:18,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2020-12-22 05:31:18,298 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 49 [2020-12-22 05:31:18,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:18,298 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2020-12-22 05:31:18,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 05:31:18,298 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2020-12-22 05:31:18,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 05:31:18,299 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:18,299 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:18,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-22 05:31:18,512 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:18,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:18,513 INFO L82 PathProgramCache]: Analyzing trace with hash -2054725181, now seen corresponding path program 4 times [2020-12-22 05:31:18,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:18,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451529169] [2020-12-22 05:31:18,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:18,525 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:18,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [535295722] [2020-12-22 05:31:18,526 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 05:31:18,612 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 05:31:18,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:18,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 05:31:18,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:18,711 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:18,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451529169] [2020-12-22 05:31:18,711 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:18,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535295722] [2020-12-22 05:31:18,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:18,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:31:18,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278073081] [2020-12-22 05:31:18,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:31:18,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:18,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:31:18,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:31:18,714 INFO L87 Difference]: Start difference. First operand 108 states and 119 transitions. Second operand 9 states. [2020-12-22 05:31:18,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:18,800 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2020-12-22 05:31:18,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 05:31:18,800 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-12-22 05:31:18,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:18,801 INFO L225 Difference]: With dead ends: 118 [2020-12-22 05:31:18,801 INFO L226 Difference]: Without dead ends: 110 [2020-12-22 05:31:18,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-12-22 05:31:18,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-12-22 05:31:18,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-12-22 05:31:18,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-12-22 05:31:18,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2020-12-22 05:31:18,816 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 51 [2020-12-22 05:31:18,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:18,816 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2020-12-22 05:31:18,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:31:18,816 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2020-12-22 05:31:18,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 05:31:18,817 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:18,817 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:19,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:19,033 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:19,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:19,033 INFO L82 PathProgramCache]: Analyzing trace with hash -12168916, now seen corresponding path program 4 times [2020-12-22 05:31:19,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:19,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517568104] [2020-12-22 05:31:19,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:19,046 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:19,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1341191573] [2020-12-22 05:31:19,047 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:19,294 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 05:31:19,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:19,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 05:31:19,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:19,386 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:19,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517568104] [2020-12-22 05:31:19,387 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:19,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341191573] [2020-12-22 05:31:19,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:19,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:31:19,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588616745] [2020-12-22 05:31:19,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:31:19,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:19,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:31:19,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:31:19,390 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand 10 states. [2020-12-22 05:31:19,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:19,461 INFO L93 Difference]: Finished difference Result 141 states and 156 transitions. [2020-12-22 05:31:19,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:31:19,462 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-12-22 05:31:19,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:19,463 INFO L225 Difference]: With dead ends: 141 [2020-12-22 05:31:19,463 INFO L226 Difference]: Without dead ends: 131 [2020-12-22 05:31:19,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:31:19,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-22 05:31:19,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2020-12-22 05:31:19,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-22 05:31:19,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 144 transitions. [2020-12-22 05:31:19,477 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 144 transitions. Word has length 52 [2020-12-22 05:31:19,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:19,477 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 144 transitions. [2020-12-22 05:31:19,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:31:19,477 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 144 transitions. [2020-12-22 05:31:19,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 05:31:19,478 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:19,478 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:19,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-22 05:31:19,693 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:19,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:19,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1005826959, now seen corresponding path program 5 times [2020-12-22 05:31:19,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:19,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906020974] [2020-12-22 05:31:19,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:19,702 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:19,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1741657977] [2020-12-22 05:31:19,703 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:19,770 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-12-22 05:31:19,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:19,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 05:31:19,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:19,859 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:19,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906020974] [2020-12-22 05:31:19,859 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:19,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741657977] [2020-12-22 05:31:19,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:19,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:31:19,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984178040] [2020-12-22 05:31:19,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:31:19,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:19,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:31:19,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:31:19,861 INFO L87 Difference]: Start difference. First operand 130 states and 144 transitions. Second operand 10 states. [2020-12-22 05:31:19,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:19,970 INFO L93 Difference]: Finished difference Result 140 states and 154 transitions. [2020-12-22 05:31:19,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 05:31:19,970 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-12-22 05:31:19,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:19,971 INFO L225 Difference]: With dead ends: 140 [2020-12-22 05:31:19,971 INFO L226 Difference]: Without dead ends: 132 [2020-12-22 05:31:19,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2020-12-22 05:31:19,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-12-22 05:31:19,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-12-22 05:31:19,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-22 05:31:19,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 146 transitions. [2020-12-22 05:31:19,986 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 146 transitions. Word has length 59 [2020-12-22 05:31:19,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:19,986 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 146 transitions. [2020-12-22 05:31:19,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:31:19,986 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 146 transitions. [2020-12-22 05:31:19,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 05:31:19,987 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:19,987 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:20,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:20,202 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:20,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:20,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1674511849, now seen corresponding path program 5 times [2020-12-22 05:31:20,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:20,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052924650] [2020-12-22 05:31:20,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:20,213 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:20,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1629642726] [2020-12-22 05:31:20,214 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:20,334 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-12-22 05:31:20,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:20,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:31:20,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:20,445 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:20,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052924650] [2020-12-22 05:31:20,445 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:20,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629642726] [2020-12-22 05:31:20,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:20,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:31:20,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832880097] [2020-12-22 05:31:20,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:31:20,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:20,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:31:20,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:31:20,449 INFO L87 Difference]: Start difference. First operand 132 states and 146 transitions. Second operand 11 states. [2020-12-22 05:31:20,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:20,536 INFO L93 Difference]: Finished difference Result 163 states and 181 transitions. [2020-12-22 05:31:20,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:31:20,536 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-12-22 05:31:20,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:20,538 INFO L225 Difference]: With dead ends: 163 [2020-12-22 05:31:20,538 INFO L226 Difference]: Without dead ends: 153 [2020-12-22 05:31:20,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:31:20,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-12-22 05:31:20,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2020-12-22 05:31:20,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-12-22 05:31:20,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 169 transitions. [2020-12-22 05:31:20,553 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 169 transitions. Word has length 59 [2020-12-22 05:31:20,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:20,553 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 169 transitions. [2020-12-22 05:31:20,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 05:31:20,554 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 169 transitions. [2020-12-22 05:31:20,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 05:31:20,554 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:20,554 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:20,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-22 05:31:20,769 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:20,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:20,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1527902860, now seen corresponding path program 6 times [2020-12-22 05:31:20,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:20,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294919751] [2020-12-22 05:31:20,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:20,778 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:20,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1859712470] [2020-12-22 05:31:20,779 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:20,871 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-12-22 05:31:20,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:20,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 05:31:20,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:20,987 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:20,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294919751] [2020-12-22 05:31:20,987 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:20,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859712470] [2020-12-22 05:31:20,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:20,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:31:20,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770814267] [2020-12-22 05:31:20,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 05:31:20,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:20,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 05:31:20,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:31:20,992 INFO L87 Difference]: Start difference. First operand 152 states and 169 transitions. Second operand 12 states. [2020-12-22 05:31:21,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:21,111 INFO L93 Difference]: Finished difference Result 187 states and 209 transitions. [2020-12-22 05:31:21,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 05:31:21,112 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-12-22 05:31:21,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:21,113 INFO L225 Difference]: With dead ends: 187 [2020-12-22 05:31:21,113 INFO L226 Difference]: Without dead ends: 175 [2020-12-22 05:31:21,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:31:21,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-12-22 05:31:21,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2020-12-22 05:31:21,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-12-22 05:31:21,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 194 transitions. [2020-12-22 05:31:21,130 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 194 transitions. Word has length 66 [2020-12-22 05:31:21,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:21,130 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 194 transitions. [2020-12-22 05:31:21,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 05:31:21,130 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 194 transitions. [2020-12-22 05:31:21,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 05:31:21,131 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:21,132 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:21,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-22 05:31:21,348 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:21,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:21,348 INFO L82 PathProgramCache]: Analyzing trace with hash -817031031, now seen corresponding path program 7 times [2020-12-22 05:31:21,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:21,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233232596] [2020-12-22 05:31:21,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:21,358 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:21,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [714001878] [2020-12-22 05:31:21,358 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:21,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-22 05:31:21,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:21,555 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:21,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233232596] [2020-12-22 05:31:21,555 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:21,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714001878] [2020-12-22 05:31:21,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:21,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-22 05:31:21,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864155638] [2020-12-22 05:31:21,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 05:31:21,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:21,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 05:31:21,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:31:21,557 INFO L87 Difference]: Start difference. First operand 174 states and 194 transitions. Second operand 13 states. [2020-12-22 05:31:21,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:21,673 INFO L93 Difference]: Finished difference Result 209 states and 234 transitions. [2020-12-22 05:31:21,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 05:31:21,674 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 73 [2020-12-22 05:31:21,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:21,675 INFO L225 Difference]: With dead ends: 209 [2020-12-22 05:31:21,675 INFO L226 Difference]: Without dead ends: 197 [2020-12-22 05:31:21,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=220, Unknown=0, NotChecked=0, Total=342 [2020-12-22 05:31:21,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-12-22 05:31:21,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2020-12-22 05:31:21,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-12-22 05:31:21,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 219 transitions. [2020-12-22 05:31:21,695 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 219 transitions. Word has length 73 [2020-12-22 05:31:21,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:21,695 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 219 transitions. [2020-12-22 05:31:21,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 05:31:21,695 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 219 transitions. [2020-12-22 05:31:21,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 05:31:21,696 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:21,697 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:21,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-22 05:31:21,912 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:21,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:21,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1740090348, now seen corresponding path program 8 times [2020-12-22 05:31:21,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:21,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971043734] [2020-12-22 05:31:21,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:21,921 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:21,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [349194359] [2020-12-22 05:31:21,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:21,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:31:21,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:21,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-22 05:31:21,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:22,162 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:22,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971043734] [2020-12-22 05:31:22,163 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:22,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349194359] [2020-12-22 05:31:22,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:22,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-22 05:31:22,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739590562] [2020-12-22 05:31:22,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 05:31:22,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:22,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 05:31:22,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-12-22 05:31:22,164 INFO L87 Difference]: Start difference. First operand 196 states and 219 transitions. Second operand 14 states. [2020-12-22 05:31:22,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:22,311 INFO L93 Difference]: Finished difference Result 231 states and 259 transitions. [2020-12-22 05:31:22,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 05:31:22,311 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 80 [2020-12-22 05:31:22,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:22,312 INFO L225 Difference]: With dead ends: 231 [2020-12-22 05:31:22,313 INFO L226 Difference]: Without dead ends: 219 [2020-12-22 05:31:22,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=150, Invalid=270, Unknown=0, NotChecked=0, Total=420 [2020-12-22 05:31:22,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-12-22 05:31:22,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 218. [2020-12-22 05:31:22,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-12-22 05:31:22,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 244 transitions. [2020-12-22 05:31:22,336 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 244 transitions. Word has length 80 [2020-12-22 05:31:22,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:22,336 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 244 transitions. [2020-12-22 05:31:22,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 05:31:22,336 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 244 transitions. [2020-12-22 05:31:22,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 05:31:22,337 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:22,337 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:22,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:22,550 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:22,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:22,551 INFO L82 PathProgramCache]: Analyzing trace with hash -588901591, now seen corresponding path program 9 times [2020-12-22 05:31:22,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:22,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747829663] [2020-12-22 05:31:22,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:22,562 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:22,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339366745] [2020-12-22 05:31:22,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:22,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-12-22 05:31:22,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:22,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 05:31:22,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:22,914 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 0 proven. 236 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:22,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747829663] [2020-12-22 05:31:22,915 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:22,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339366745] [2020-12-22 05:31:22,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:22,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-12-22 05:31:22,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701538635] [2020-12-22 05:31:22,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 05:31:22,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:22,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 05:31:22,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:31:22,917 INFO L87 Difference]: Start difference. First operand 218 states and 244 transitions. Second operand 15 states. [2020-12-22 05:31:23,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:23,070 INFO L93 Difference]: Finished difference Result 253 states and 284 transitions. [2020-12-22 05:31:23,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 05:31:23,070 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 87 [2020-12-22 05:31:23,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:23,072 INFO L225 Difference]: With dead ends: 253 [2020-12-22 05:31:23,072 INFO L226 Difference]: Without dead ends: 241 [2020-12-22 05:31:23,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=181, Invalid=325, Unknown=0, NotChecked=0, Total=506 [2020-12-22 05:31:23,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-12-22 05:31:23,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 240. [2020-12-22 05:31:23,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-12-22 05:31:23,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 269 transitions. [2020-12-22 05:31:23,121 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 269 transitions. Word has length 87 [2020-12-22 05:31:23,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:23,122 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 269 transitions. [2020-12-22 05:31:23,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 05:31:23,122 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 269 transitions. [2020-12-22 05:31:23,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 05:31:23,123 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:23,124 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:23,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-12-22 05:31:23,337 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:23,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:23,338 INFO L82 PathProgramCache]: Analyzing trace with hash 833453388, now seen corresponding path program 10 times [2020-12-22 05:31:23,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:23,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008116556] [2020-12-22 05:31:23,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:23,359 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:23,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [864232325] [2020-12-22 05:31:23,360 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:23,546 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 05:31:23,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:23,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 05:31:23,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:23,757 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:23,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008116556] [2020-12-22 05:31:23,757 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:23,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864232325] [2020-12-22 05:31:23,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:23,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-12-22 05:31:23,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517966535] [2020-12-22 05:31:23,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 05:31:23,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:23,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 05:31:23,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-12-22 05:31:23,759 INFO L87 Difference]: Start difference. First operand 240 states and 269 transitions. Second operand 16 states. [2020-12-22 05:31:23,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:23,945 INFO L93 Difference]: Finished difference Result 275 states and 309 transitions. [2020-12-22 05:31:23,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 05:31:23,945 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 94 [2020-12-22 05:31:23,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:23,947 INFO L225 Difference]: With dead ends: 275 [2020-12-22 05:31:23,947 INFO L226 Difference]: Without dead ends: 263 [2020-12-22 05:31:23,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=215, Invalid=385, Unknown=0, NotChecked=0, Total=600 [2020-12-22 05:31:23,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-12-22 05:31:23,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 262. [2020-12-22 05:31:23,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-12-22 05:31:23,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 294 transitions. [2020-12-22 05:31:23,973 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 294 transitions. Word has length 94 [2020-12-22 05:31:23,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:23,973 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 294 transitions. [2020-12-22 05:31:23,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 05:31:23,974 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 294 transitions. [2020-12-22 05:31:23,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-22 05:31:23,975 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:23,975 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:24,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:24,181 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:24,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:24,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1352403511, now seen corresponding path program 11 times [2020-12-22 05:31:24,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:24,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190704992] [2020-12-22 05:31:24,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:24,191 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:24,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [809508110] [2020-12-22 05:31:24,191 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:34:36,941 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-12-22 05:34:36,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:34:36,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-22 05:34:36,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:34:37,217 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 0 proven. 359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:34:37,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190704992] [2020-12-22 05:34:37,218 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:34:37,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809508110] [2020-12-22 05:34:37,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:34:37,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-12-22 05:34:37,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35335337] [2020-12-22 05:34:37,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 05:34:37,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:34:37,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 05:34:37,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:34:37,221 INFO L87 Difference]: Start difference. First operand 262 states and 294 transitions. Second operand 17 states. [2020-12-22 05:34:37,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:34:37,408 INFO L93 Difference]: Finished difference Result 297 states and 334 transitions. [2020-12-22 05:34:37,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-22 05:34:37,408 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 101 [2020-12-22 05:34:37,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:34:37,410 INFO L225 Difference]: With dead ends: 297 [2020-12-22 05:34:37,410 INFO L226 Difference]: Without dead ends: 285 [2020-12-22 05:34:37,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=252, Invalid=450, Unknown=0, NotChecked=0, Total=702 [2020-12-22 05:34:37,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-12-22 05:34:37,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 284. [2020-12-22 05:34:37,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-12-22 05:34:37,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 319 transitions. [2020-12-22 05:34:37,436 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 319 transitions. Word has length 101 [2020-12-22 05:34:37,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:34:37,437 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 319 transitions. [2020-12-22 05:34:37,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 05:34:37,437 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 319 transitions. [2020-12-22 05:34:37,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 05:34:37,438 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:34:37,438 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:34:37,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-12-22 05:34:37,653 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:34:37,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:34:37,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1092000084, now seen corresponding path program 12 times [2020-12-22 05:34:37,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:34:37,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148665] [2020-12-22 05:34:37,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:34:37,663 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:34:37,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2011759054] [2020-12-22 05:34:37,664 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:34:38,198 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-12-22 05:34:38,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:34:38,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 05:34:38,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:34:38,432 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:34:38,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148665] [2020-12-22 05:34:38,433 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:34:38,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011759054] [2020-12-22 05:34:38,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:34:38,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-12-22 05:34:38,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899712499] [2020-12-22 05:34:38,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 05:34:38,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:34:38,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 05:34:38,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:34:38,434 INFO L87 Difference]: Start difference. First operand 284 states and 319 transitions. Second operand 18 states. [2020-12-22 05:34:38,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:34:38,655 INFO L93 Difference]: Finished difference Result 319 states and 359 transitions. [2020-12-22 05:34:38,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-22 05:34:38,656 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 108 [2020-12-22 05:34:38,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:34:38,658 INFO L225 Difference]: With dead ends: 319 [2020-12-22 05:34:38,658 INFO L226 Difference]: Without dead ends: 307 [2020-12-22 05:34:38,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=292, Invalid=520, Unknown=0, NotChecked=0, Total=812 [2020-12-22 05:34:38,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-12-22 05:34:38,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 306. [2020-12-22 05:34:38,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-12-22 05:34:38,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 344 transitions. [2020-12-22 05:34:38,685 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 344 transitions. Word has length 108 [2020-12-22 05:34:38,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:34:38,685 INFO L481 AbstractCegarLoop]: Abstraction has 306 states and 344 transitions. [2020-12-22 05:34:38,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 05:34:38,686 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 344 transitions. [2020-12-22 05:34:38,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-22 05:34:38,687 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:34:38,687 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:34:38,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-12-22 05:34:38,902 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:34:38,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:34:38,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1072643991, now seen corresponding path program 13 times [2020-12-22 05:34:38,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:34:38,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141588132] [2020-12-22 05:34:38,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:34:38,912 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:34:38,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [438204087] [2020-12-22 05:34:38,912 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:34:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:34:39,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-22 05:34:39,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:34:39,235 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:34:39,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141588132] [2020-12-22 05:34:39,236 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:34:39,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438204087] [2020-12-22 05:34:39,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:34:39,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-12-22 05:34:39,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15370801] [2020-12-22 05:34:39,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 05:34:39,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:34:39,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 05:34:39,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-12-22 05:34:39,238 INFO L87 Difference]: Start difference. First operand 306 states and 344 transitions. Second operand 19 states. [2020-12-22 05:34:39,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:34:39,486 INFO L93 Difference]: Finished difference Result 341 states and 384 transitions. [2020-12-22 05:34:39,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-22 05:34:39,486 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 115 [2020-12-22 05:34:39,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:34:39,488 INFO L225 Difference]: With dead ends: 341 [2020-12-22 05:34:39,488 INFO L226 Difference]: Without dead ends: 329 [2020-12-22 05:34:39,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=335, Invalid=595, Unknown=0, NotChecked=0, Total=930 [2020-12-22 05:34:39,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-12-22 05:34:39,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 328. [2020-12-22 05:34:39,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-12-22 05:34:39,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 369 transitions. [2020-12-22 05:34:39,517 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 369 transitions. Word has length 115 [2020-12-22 05:34:39,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:34:39,517 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 369 transitions. [2020-12-22 05:34:39,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 05:34:39,517 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 369 transitions. [2020-12-22 05:34:39,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-22 05:34:39,519 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:34:39,519 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:34:39,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-22 05:34:39,734 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:34:39,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:34:39,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1860265996, now seen corresponding path program 14 times [2020-12-22 05:34:39,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:34:39,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383953887] [2020-12-22 05:34:39,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:34:39,744 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:34:39,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1930964317] [2020-12-22 05:34:39,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:34:39,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:34:39,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:34:39,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-22 05:34:39,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:34:40,126 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:34:40,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383953887] [2020-12-22 05:34:40,127 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:34:40,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930964317] [2020-12-22 05:34:40,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:34:40,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-12-22 05:34:40,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796418604] [2020-12-22 05:34:40,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-22 05:34:40,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:34:40,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-22 05:34:40,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-12-22 05:34:40,129 INFO L87 Difference]: Start difference. First operand 328 states and 369 transitions. Second operand 20 states. [2020-12-22 05:34:40,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:34:40,414 INFO L93 Difference]: Finished difference Result 363 states and 409 transitions. [2020-12-22 05:34:40,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-22 05:34:40,415 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 122 [2020-12-22 05:34:40,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:34:40,418 INFO L225 Difference]: With dead ends: 363 [2020-12-22 05:34:40,418 INFO L226 Difference]: Without dead ends: 351 [2020-12-22 05:34:40,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=381, Invalid=675, Unknown=0, NotChecked=0, Total=1056 [2020-12-22 05:34:40,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-12-22 05:34:40,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 350. [2020-12-22 05:34:40,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-12-22 05:34:40,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 394 transitions. [2020-12-22 05:34:40,455 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 394 transitions. Word has length 122 [2020-12-22 05:34:40,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:34:40,456 INFO L481 AbstractCegarLoop]: Abstraction has 350 states and 394 transitions. [2020-12-22 05:34:40,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-22 05:34:40,456 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 394 transitions. [2020-12-22 05:34:40,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 05:34:40,458 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:34:40,458 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:34:40,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-12-22 05:34:40,673 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:34:40,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:34:40,674 INFO L82 PathProgramCache]: Analyzing trace with hash 2125886217, now seen corresponding path program 15 times [2020-12-22 05:34:40,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:34:40,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148529754] [2020-12-22 05:34:40,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:34:40,682 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:34:40,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1537208886] [2020-12-22 05:34:40,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:34:41,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2020-12-22 05:34:41,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:34:41,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-22 05:34:41,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:34:41,297 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 0 proven. 689 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:34:41,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148529754] [2020-12-22 05:34:41,297 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:34:41,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537208886] [2020-12-22 05:34:41,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:34:41,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-12-22 05:34:41,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978780629] [2020-12-22 05:34:41,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-22 05:34:41,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:34:41,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-22 05:34:41,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-12-22 05:34:41,299 INFO L87 Difference]: Start difference. First operand 350 states and 394 transitions. Second operand 21 states. [2020-12-22 05:34:41,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:34:41,611 INFO L93 Difference]: Finished difference Result 385 states and 434 transitions. [2020-12-22 05:34:41,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-22 05:34:41,612 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 129 [2020-12-22 05:34:41,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:34:41,614 INFO L225 Difference]: With dead ends: 385 [2020-12-22 05:34:41,614 INFO L226 Difference]: Without dead ends: 373 [2020-12-22 05:34:41,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=430, Invalid=760, Unknown=0, NotChecked=0, Total=1190 [2020-12-22 05:34:41,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-12-22 05:34:41,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 372. [2020-12-22 05:34:41,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-12-22 05:34:41,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 419 transitions. [2020-12-22 05:34:41,646 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 419 transitions. Word has length 129 [2020-12-22 05:34:41,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:34:41,646 INFO L481 AbstractCegarLoop]: Abstraction has 372 states and 419 transitions. [2020-12-22 05:34:41,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-22 05:34:41,647 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 419 transitions. [2020-12-22 05:34:41,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-22 05:34:41,648 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:34:41,648 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:34:41,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-12-22 05:34:41,862 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:34:41,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:34:41,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1519092076, now seen corresponding path program 16 times [2020-12-22 05:34:41,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:34:41,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349432810] [2020-12-22 05:34:41,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:34:41,872 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:34:41,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1006585330] [2020-12-22 05:34:41,873 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:34:43,390 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 05:34:43,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:34:43,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-22 05:34:43,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:34:43,722 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 0 proven. 789 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:34:43,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349432810] [2020-12-22 05:34:43,723 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:34:43,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006585330] [2020-12-22 05:34:43,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:34:43,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-12-22 05:34:43,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032632992] [2020-12-22 05:34:43,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 05:34:43,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:34:43,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 05:34:43,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-12-22 05:34:43,725 INFO L87 Difference]: Start difference. First operand 372 states and 419 transitions. Second operand 22 states. [2020-12-22 05:34:44,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:34:44,048 INFO L93 Difference]: Finished difference Result 407 states and 459 transitions. [2020-12-22 05:34:44,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-12-22 05:34:44,048 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 136 [2020-12-22 05:34:44,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:34:44,050 INFO L225 Difference]: With dead ends: 407 [2020-12-22 05:34:44,050 INFO L226 Difference]: Without dead ends: 395 [2020-12-22 05:34:44,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=482, Invalid=850, Unknown=0, NotChecked=0, Total=1332 [2020-12-22 05:34:44,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-12-22 05:34:44,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 394. [2020-12-22 05:34:44,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-12-22 05:34:44,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 444 transitions. [2020-12-22 05:34:44,085 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 444 transitions. Word has length 136 [2020-12-22 05:34:44,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:34:44,085 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 444 transitions. [2020-12-22 05:34:44,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-22 05:34:44,085 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 444 transitions. [2020-12-22 05:34:44,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 05:34:44,087 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:34:44,087 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:34:44,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-12-22 05:34:44,297 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:34:44,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:34:44,298 INFO L82 PathProgramCache]: Analyzing trace with hash -241234519, now seen corresponding path program 17 times [2020-12-22 05:34:44,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:34:44,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130918900] [2020-12-22 05:34:44,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:34:44,308 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:34:44,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1337534] [2020-12-22 05:34:44,308 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:34:51,591 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2020-12-22 05:34:51,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:34:51,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 41 conjunts are in the unsatisfiable core [2020-12-22 05:34:51,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:34:51,963 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 0 proven. 896 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:34:51,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130918900] [2020-12-22 05:34:51,963 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:34:51,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337534] [2020-12-22 05:34:51,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:34:51,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-12-22 05:34:51,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364399716] [2020-12-22 05:34:51,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-22 05:34:51,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:34:51,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-22 05:34:51,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-12-22 05:34:51,965 INFO L87 Difference]: Start difference. First operand 394 states and 444 transitions. Second operand 23 states. [2020-12-22 05:34:52,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:34:52,326 INFO L93 Difference]: Finished difference Result 429 states and 484 transitions. [2020-12-22 05:34:52,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-22 05:34:52,326 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 143 [2020-12-22 05:34:52,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:34:52,329 INFO L225 Difference]: With dead ends: 429 [2020-12-22 05:34:52,329 INFO L226 Difference]: Without dead ends: 417 [2020-12-22 05:34:52,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=537, Invalid=945, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 05:34:52,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-12-22 05:34:52,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 416. [2020-12-22 05:34:52,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-12-22 05:34:52,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 469 transitions. [2020-12-22 05:34:52,367 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 469 transitions. Word has length 143 [2020-12-22 05:34:52,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:34:52,367 INFO L481 AbstractCegarLoop]: Abstraction has 416 states and 469 transitions. [2020-12-22 05:34:52,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-22 05:34:52,367 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 469 transitions. [2020-12-22 05:34:52,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-12-22 05:34:52,370 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:34:52,370 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:34:52,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-12-22 05:34:52,580 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:34:52,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:34:52,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1268927796, now seen corresponding path program 18 times [2020-12-22 05:34:52,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:34:52,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827883476] [2020-12-22 05:34:52,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:34:52,589 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:34:52,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1063065081] [2020-12-22 05:34:52,590 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:34:53,131 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-12-22 05:34:53,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:34:53,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 05:34:53,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:34:53,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 288 proven. 43 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2020-12-22 05:34:53,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827883476] [2020-12-22 05:34:53,226 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:34:53,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063065081] [2020-12-22 05:34:53,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:34:53,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:34:53,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014518636] [2020-12-22 05:34:53,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:34:53,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:34:53,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:34:53,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:34:53,227 INFO L87 Difference]: Start difference. First operand 416 states and 469 transitions. Second operand 5 states. [2020-12-22 05:34:53,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:34:53,288 INFO L93 Difference]: Finished difference Result 531 states and 599 transitions. [2020-12-22 05:34:53,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:34:53,289 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-12-22 05:34:53,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:34:53,291 INFO L225 Difference]: With dead ends: 531 [2020-12-22 05:34:53,291 INFO L226 Difference]: Without dead ends: 395 [2020-12-22 05:34:53,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:34:53,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-12-22 05:34:53,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2020-12-22 05:34:53,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-12-22 05:34:53,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 445 transitions. [2020-12-22 05:34:53,338 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 445 transitions. Word has length 150 [2020-12-22 05:34:53,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:34:53,338 INFO L481 AbstractCegarLoop]: Abstraction has 395 states and 445 transitions. [2020-12-22 05:34:53,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:34:53,338 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 445 transitions. [2020-12-22 05:34:53,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-22 05:34:53,340 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:34:53,340 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:34:53,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-12-22 05:34:53,546 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:34:53,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:34:53,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1624647849, now seen corresponding path program 19 times [2020-12-22 05:34:53,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:34:53,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906437811] [2020-12-22 05:34:53,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:34:53,558 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:34:53,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903330965] [2020-12-22 05:34:53,559 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:34:53,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:34:53,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 05:34:53,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:34:53,858 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 335 proven. 87 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2020-12-22 05:34:53,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906437811] [2020-12-22 05:34:53,858 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:34:53,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903330965] [2020-12-22 05:34:53,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:34:53,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:34:53,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997353] [2020-12-22 05:34:53,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:34:53,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:34:53,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:34:53,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:34:53,860 INFO L87 Difference]: Start difference. First operand 395 states and 445 transitions. Second operand 9 states. [2020-12-22 05:34:53,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:34:53,985 INFO L93 Difference]: Finished difference Result 612 states and 692 transitions. [2020-12-22 05:34:53,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:34:53,986 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 151 [2020-12-22 05:34:53,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:34:53,988 INFO L225 Difference]: With dead ends: 612 [2020-12-22 05:34:53,988 INFO L226 Difference]: Without dead ends: 381 [2020-12-22 05:34:53,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:34:53,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-12-22 05:34:54,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2020-12-22 05:34:54,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-12-22 05:34:54,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 428 transitions. [2020-12-22 05:34:54,021 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 428 transitions. Word has length 151 [2020-12-22 05:34:54,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:34:54,021 INFO L481 AbstractCegarLoop]: Abstraction has 381 states and 428 transitions. [2020-12-22 05:34:54,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:34:54,021 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 428 transitions. [2020-12-22 05:34:54,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-22 05:34:54,022 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:34:54,022 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:34:54,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:34:54,236 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:34:54,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:34:54,236 INFO L82 PathProgramCache]: Analyzing trace with hash -187266160, now seen corresponding path program 20 times [2020-12-22 05:34:54,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:34:54,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967728645] [2020-12-22 05:34:54,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:34:54,246 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:34:54,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1945595472] [2020-12-22 05:34:54,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:34:54,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:34:54,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:34:54,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 05:34:54,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:34:54,511 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 354 proven. 146 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-12-22 05:34:54,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967728645] [2020-12-22 05:34:54,512 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:34:54,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945595472] [2020-12-22 05:34:54,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:34:54,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:34:54,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934645799] [2020-12-22 05:34:54,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:34:54,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:34:54,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:34:54,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:34:54,513 INFO L87 Difference]: Start difference. First operand 381 states and 428 transitions. Second operand 7 states. [2020-12-22 05:34:54,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:34:54,620 INFO L93 Difference]: Finished difference Result 584 states and 659 transitions. [2020-12-22 05:34:54,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:34:54,621 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-12-22 05:34:54,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:34:54,623 INFO L225 Difference]: With dead ends: 584 [2020-12-22 05:34:54,623 INFO L226 Difference]: Without dead ends: 367 [2020-12-22 05:34:54,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:34:54,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-12-22 05:34:54,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2020-12-22 05:34:54,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-12-22 05:34:54,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 411 transitions. [2020-12-22 05:34:54,653 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 411 transitions. Word has length 152 [2020-12-22 05:34:54,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:34:54,653 INFO L481 AbstractCegarLoop]: Abstraction has 367 states and 411 transitions. [2020-12-22 05:34:54,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:34:54,653 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 411 transitions. [2020-12-22 05:34:54,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 05:34:54,655 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:34:54,655 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:34:54,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:34:54,871 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:34:54,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:34:54,871 INFO L82 PathProgramCache]: Analyzing trace with hash -773202029, now seen corresponding path program 21 times [2020-12-22 05:34:54,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:34:54,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903406613] [2020-12-22 05:34:54,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:34:54,881 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:34:54,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [806079856] [2020-12-22 05:34:54,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:34:55,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2020-12-22 05:34:55,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:34:55,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-22 05:34:55,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:34:55,834 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 345 proven. 220 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-12-22 05:34:55,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903406613] [2020-12-22 05:34:55,835 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:34:55,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806079856] [2020-12-22 05:34:55,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:34:55,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:34:55,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964359851] [2020-12-22 05:34:55,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:34:55,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:34:55,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:34:55,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:34:55,836 INFO L87 Difference]: Start difference. First operand 367 states and 411 transitions. Second operand 8 states. [2020-12-22 05:34:55,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:34:55,977 INFO L93 Difference]: Finished difference Result 556 states and 626 transitions. [2020-12-22 05:34:55,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:34:55,978 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2020-12-22 05:34:55,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:34:55,979 INFO L225 Difference]: With dead ends: 556 [2020-12-22 05:34:55,979 INFO L226 Difference]: Without dead ends: 353 [2020-12-22 05:34:55,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:34:55,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-12-22 05:34:56,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2020-12-22 05:34:56,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-12-22 05:34:56,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 394 transitions. [2020-12-22 05:34:56,011 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 394 transitions. Word has length 153 [2020-12-22 05:34:56,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:34:56,011 INFO L481 AbstractCegarLoop]: Abstraction has 353 states and 394 transitions. [2020-12-22 05:34:56,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:34:56,011 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 394 transitions. [2020-12-22 05:34:56,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-22 05:34:56,013 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:34:56,013 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:34:56,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2020-12-22 05:34:56,227 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:34:56,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:34:56,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1624092076, now seen corresponding path program 22 times [2020-12-22 05:34:56,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:34:56,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889198149] [2020-12-22 05:34:56,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:34:56,237 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:34:56,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238397025] [2020-12-22 05:34:56,238 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true