/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/dijkstra-u_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:06:02,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:06:02,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:06:02,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:06:02,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:06:02,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:06:02,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:06:02,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:06:02,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:06:02,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:06:02,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:06:02,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:06:02,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:06:02,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:06:02,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:06:02,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:06:02,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:06:02,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:06:02,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:06:03,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:06:03,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:06:03,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:06:03,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:06:03,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:06:03,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:06:03,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:06:03,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:06:03,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:06:03,022 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:06:03,051 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:06:03,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:06:03,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:06:03,054 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:06:03,054 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:06:03,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:06:03,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:06:03,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:06:03,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:06:03,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:06:03,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:06:03,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:06:03,056 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:06:03,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:06:03,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:06:03,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:06:03,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:06:03,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:06:03,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:06:03,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:06:03,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:06:03,058 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:06:03,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:06:03,058 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:06:03,059 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:06:03,059 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:06:03,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:06:03,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:06:03,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:06:03,493 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:06:03,493 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:06:03,495 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound20.c [2020-12-22 05:06:03,569 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd05d2d35/4a386bdb64364aeb8decae01babc07d7/FLAGd53f21725 [2020-12-22 05:06:04,221 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:06:04,222 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound20.c [2020-12-22 05:06:04,231 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd05d2d35/4a386bdb64364aeb8decae01babc07d7/FLAGd53f21725 [2020-12-22 05:06:04,592 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd05d2d35/4a386bdb64364aeb8decae01babc07d7 [2020-12-22 05:06:04,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:06:04,598 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:06:04,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:06:04,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:06:04,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:06:04,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:06:04" (1/1) ... [2020-12-22 05:06:04,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ec0873b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:04, skipping insertion in model container [2020-12-22 05:06:04,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:06:04" (1/1) ... [2020-12-22 05:06:04,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:06:04,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:06:04,784 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/dijkstra-u_valuebound20.c[525,538] [2020-12-22 05:06:04,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:06:04,829 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:06:04,843 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/dijkstra-u_valuebound20.c[525,538] [2020-12-22 05:06:04,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:06:04,877 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:06:04,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:04 WrapperNode [2020-12-22 05:06:04,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:06:04,879 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:06:04,879 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:06:04,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:06:04,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:04" (1/1) ... [2020-12-22 05:06:04,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:04" (1/1) ... [2020-12-22 05:06:04,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:06:04,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:06:04,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:06:04,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:06:04,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:04" (1/1) ... [2020-12-22 05:06:04,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:04" (1/1) ... [2020-12-22 05:06:04,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:04" (1/1) ... [2020-12-22 05:06:04,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:04" (1/1) ... [2020-12-22 05:06:04,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:04" (1/1) ... [2020-12-22 05:06:04,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:04" (1/1) ... [2020-12-22 05:06:04,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:04" (1/1) ... [2020-12-22 05:06:04,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:06:04,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:06:04,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:06:04,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:06:04,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:04" (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 05:06:05,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:06:05,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:06:05,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:06:05,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:06:07,590 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:06:07,590 INFO L299 CfgBuilder]: Removed 28 assume(true) statements. [2020-12-22 05:06:07,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:06:07 BoogieIcfgContainer [2020-12-22 05:06:07,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:06:07,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:06:07,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:06:07,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:06:07,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:06:04" (1/3) ... [2020-12-22 05:06:07,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ef0f07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:06:07, skipping insertion in model container [2020-12-22 05:06:07,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:04" (2/3) ... [2020-12-22 05:06:07,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ef0f07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:06:07, skipping insertion in model container [2020-12-22 05:06:07,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:06:07" (3/3) ... [2020-12-22 05:06:07,602 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_valuebound20.c [2020-12-22 05:06:07,608 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:06:07,614 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-12-22 05:06:07,632 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-12-22 05:06:07,662 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:06:07,662 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:06:07,662 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:06:07,662 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:06:07,662 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:06:07,663 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:06:07,663 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:06:07,663 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:06:07,682 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-12-22 05:06:07,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 05:06:07,688 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:06:07,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:06:07,689 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_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 05:06:07,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:06:07,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1235857098, now seen corresponding path program 1 times [2020-12-22 05:06:07,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:06:07,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877643880] [2020-12-22 05:06:07,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:06:07,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:06:07,887 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 05:06:07,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877643880] [2020-12-22 05:06:07,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:06:07,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:06:07,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115540887] [2020-12-22 05:06:07,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:06:07,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:06:07,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:06:07,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:06:07,927 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2020-12-22 05:06:07,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:06:07,970 INFO L93 Difference]: Finished difference Result 97 states and 130 transitions. [2020-12-22 05:06:07,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:06:07,971 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-22 05:06:07,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:06:07,995 INFO L225 Difference]: With dead ends: 97 [2020-12-22 05:06:07,996 INFO L226 Difference]: Without dead ends: 46 [2020-12-22 05:06:08,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:06:08,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-22 05:06:08,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-12-22 05:06:08,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-22 05:06:08,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-12-22 05:06:08,070 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 10 [2020-12-22 05:06:08,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:06:08,070 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-12-22 05:06:08,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:06:08,071 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-12-22 05:06:08,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:06:08,072 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:06:08,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:06:08,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:06:08,075 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_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 05:06:08,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:06:08,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1503620767, now seen corresponding path program 1 times [2020-12-22 05:06:08,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:06:08,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159653744] [2020-12-22 05:06:08,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:06:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:06:08,446 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 05:06:08,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159653744] [2020-12-22 05:06:08,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:06:08,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:06:08,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842733899] [2020-12-22 05:06:08,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:06:08,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:06:08,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:06:08,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:06:08,453 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 5 states. [2020-12-22 05:06:23,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:06:23,568 INFO L93 Difference]: Finished difference Result 110 states and 121 transitions. [2020-12-22 05:06:23,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:06:23,569 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-22 05:06:23,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:06:23,570 INFO L225 Difference]: With dead ends: 110 [2020-12-22 05:06:23,571 INFO L226 Difference]: Without dead ends: 68 [2020-12-22 05:06:23,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:06:23,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-22 05:06:23,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 63. [2020-12-22 05:06:23,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-22 05:06:23,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-12-22 05:06:23,586 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 11 [2020-12-22 05:06:23,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:06:23,586 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-12-22 05:06:23,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:06:23,586 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-12-22 05:06:23,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 05:06:23,587 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:06:23,587 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:06:23,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:06:23,588 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_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 05:06:23,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:06:23,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1828543716, now seen corresponding path program 1 times [2020-12-22 05:06:23,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:06:23,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338339028] [2020-12-22 05:06:23,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:06:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:06:23,849 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 05:06:23,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338339028] [2020-12-22 05:06:23,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124166568] [2020-12-22 05:06:23,850 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 05:06:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:06:23,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 05:06:23,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:06:24,041 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:06:24,048 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:06:24,071 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 05:06:24,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 05:06:24,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-12-22 05:06:24,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917399714] [2020-12-22 05:06:24,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:06:24,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:06:24,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:06:24,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:06:24,074 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 9 states. [2020-12-22 05:06:50,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:06:50,125 INFO L93 Difference]: Finished difference Result 146 states and 165 transitions. [2020-12-22 05:06:50,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 05:06:50,126 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-12-22 05:06:50,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:06:50,127 INFO L225 Difference]: With dead ends: 146 [2020-12-22 05:06:50,128 INFO L226 Difference]: Without dead ends: 124 [2020-12-22 05:06:50,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2020-12-22 05:06:50,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-22 05:06:50,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 99. [2020-12-22 05:06:50,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-22 05:06:50,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2020-12-22 05:06:50,145 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 13 [2020-12-22 05:06:50,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:06:50,145 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2020-12-22 05:06:50,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:06:50,146 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2020-12-22 05:06:50,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 05:06:50,146 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:06:50,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:06:50,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 05:06:50,362 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_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 05:06:50,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:06:50,364 INFO L82 PathProgramCache]: Analyzing trace with hash 2147482631, now seen corresponding path program 1 times [2020-12-22 05:06:50,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:06:50,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682083393] [2020-12-22 05:06:50,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:06:50,394 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:06:50,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [899197758] [2020-12-22 05:06:50,395 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 05:06:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:06:50,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:06:50,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:06:50,594 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 05:06:50,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682083393] [2020-12-22 05:06:50,595 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:06:50,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899197758] [2020-12-22 05:06:50,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:06:50,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:06:50,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619243202] [2020-12-22 05:06:50,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:06:50,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:06:50,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:06:50,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:06:50,599 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand 6 states. [2020-12-22 05:07:00,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:07:00,911 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2020-12-22 05:07:00,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:07:00,912 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-22 05:07:00,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:07:00,917 INFO L225 Difference]: With dead ends: 103 [2020-12-22 05:07:00,918 INFO L226 Difference]: Without dead ends: 84 [2020-12-22 05:07:00,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:07:00,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-22 05:07:00,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-12-22 05:07:00,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-22 05:07:00,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2020-12-22 05:07:00,943 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 15 [2020-12-22 05:07:00,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:07:00,944 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2020-12-22 05:07:00,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:07:00,944 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2020-12-22 05:07:00,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 05:07:00,945 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:07:00,948 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:07:01,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:07:01,164 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_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 05:07:01,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:07:01,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1165801538, now seen corresponding path program 1 times [2020-12-22 05:07:01,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:07:01,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445426479] [2020-12-22 05:07:01,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:07:01,179 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:07:01,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [90245165] [2020-12-22 05:07:01,180 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 05:07:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:07:01,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 05:07:01,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:07:01,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 05:07:01,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445426479] [2020-12-22 05:07:01,386 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:07:01,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90245165] [2020-12-22 05:07:01,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:07:01,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:07:01,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017178341] [2020-12-22 05:07:01,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:07:01,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:07:01,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:07:01,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:07:01,388 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand 6 states. [2020-12-22 05:07:08,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:07:08,469 INFO L93 Difference]: Finished difference Result 109 states and 119 transitions. [2020-12-22 05:07:08,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:07:08,470 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-22 05:07:08,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:07:08,472 INFO L225 Difference]: With dead ends: 109 [2020-12-22 05:07:08,472 INFO L226 Difference]: Without dead ends: 101 [2020-12-22 05:07:08,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:07:08,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-12-22 05:07:08,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2020-12-22 05:07:08,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-22 05:07:08,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2020-12-22 05:07:08,500 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 17 [2020-12-22 05:07:08,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:07:08,500 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2020-12-22 05:07:08,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:07:08,500 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2020-12-22 05:07:08,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 05:07:08,505 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:07:08,505 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:07:08,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:07:08,706 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_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 05:07:08,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:07:08,707 INFO L82 PathProgramCache]: Analyzing trace with hash -957581047, now seen corresponding path program 1 times [2020-12-22 05:07:08,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:07:08,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216525719] [2020-12-22 05:07:08,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:07:08,733 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:07:08,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1125361303] [2020-12-22 05:07:08,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 05:07:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:07:08,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-22 05:07:08,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:07:09,176 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:07:09,182 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 05:07:09,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:07:09,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216525719] [2020-12-22 05:07:09,217 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:07:09,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125361303] [2020-12-22 05:07:09,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:07:09,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:07:09,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169082044] [2020-12-22 05:07:09,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:07:09,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:07:09,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:07:09,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:07:09,219 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand 9 states. [2020-12-22 05:07:18,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:07:18,028 INFO L93 Difference]: Finished difference Result 172 states and 184 transitions. [2020-12-22 05:07:18,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:07:18,031 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-12-22 05:07:18,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:07:18,032 INFO L225 Difference]: With dead ends: 172 [2020-12-22 05:07:18,032 INFO L226 Difference]: Without dead ends: 130 [2020-12-22 05:07:18,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:07:18,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-12-22 05:07:18,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 108. [2020-12-22 05:07:18,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-22 05:07:18,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 121 transitions. [2020-12-22 05:07:18,049 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 121 transitions. Word has length 27 [2020-12-22 05:07:18,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:07:18,049 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 121 transitions. [2020-12-22 05:07:18,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:07:18,049 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 121 transitions. [2020-12-22 05:07:18,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 05:07:18,050 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:07:18,051 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:07:18,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:07:18,256 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_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 05:07:18,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:07:18,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1112228340, now seen corresponding path program 1 times [2020-12-22 05:07:18,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:07:18,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972288870] [2020-12-22 05:07:18,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:07:18,274 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:07:18,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [918001097] [2020-12-22 05:07:18,275 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 05:07:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:07:18,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-22 05:07:18,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:07:18,962 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:07:18,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972288870] [2020-12-22 05:07:18,962 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:07:18,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918001097] [2020-12-22 05:07:18,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:07:18,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:07:18,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422813149] [2020-12-22 05:07:18,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:07:18,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:07:18,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:07:18,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:07:18,964 INFO L87 Difference]: Start difference. First operand 108 states and 121 transitions. Second operand 10 states. [2020-12-22 05:07:34,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:07:34,722 INFO L93 Difference]: Finished difference Result 127 states and 135 transitions. [2020-12-22 05:07:34,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:07:34,723 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2020-12-22 05:07:34,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:07:34,725 INFO L225 Difference]: With dead ends: 127 [2020-12-22 05:07:34,725 INFO L226 Difference]: Without dead ends: 121 [2020-12-22 05:07:34,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:07:34,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-12-22 05:07:34,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 112. [2020-12-22 05:07:34,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-12-22 05:07:34,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 124 transitions. [2020-12-22 05:07:34,752 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 124 transitions. Word has length 29 [2020-12-22 05:07:34,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:07:34,753 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 124 transitions. [2020-12-22 05:07:34,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:07:34,753 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 124 transitions. [2020-12-22 05:07:34,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 05:07:34,757 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:07:34,757 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:07:34,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 05:07:34,958 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_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 05:07:34,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:07:34,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1667347652, now seen corresponding path program 2 times [2020-12-22 05:07:34,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:07:34,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90840589] [2020-12-22 05:07:34,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:07:34,975 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:07:34,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1243001961] [2020-12-22 05:07:34,975 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 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 05:07:35,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:07:35,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:07:35,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-22 05:07:35,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:07:35,399 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:07:35,404 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 05:07:35,445 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 05:07:35,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90840589] [2020-12-22 05:07:35,446 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:07:35,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243001961] [2020-12-22 05:07:35,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:07:35,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:07:35,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228896278] [2020-12-22 05:07:35,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:07:35,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:07:35,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:07:35,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:07:35,448 INFO L87 Difference]: Start difference. First operand 112 states and 124 transitions. Second operand 9 states. [2020-12-22 05:07:49,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:07:49,518 INFO L93 Difference]: Finished difference Result 207 states and 229 transitions. [2020-12-22 05:07:49,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:07:49,518 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-12-22 05:07:49,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:07:49,520 INFO L225 Difference]: With dead ends: 207 [2020-12-22 05:07:49,520 INFO L226 Difference]: Without dead ends: 151 [2020-12-22 05:07:49,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:07:49,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-12-22 05:07:49,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 141. [2020-12-22 05:07:49,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-12-22 05:07:49,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 159 transitions. [2020-12-22 05:07:49,535 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 159 transitions. Word has length 29 [2020-12-22 05:07:49,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:07:49,535 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 159 transitions. [2020-12-22 05:07:49,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:07:49,536 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 159 transitions. [2020-12-22 05:07:49,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:07:49,537 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:07:49,537 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:07:49,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:07:49,740 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_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 05:07:49,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:07:49,742 INFO L82 PathProgramCache]: Analyzing trace with hash 595578799, now seen corresponding path program 1 times [2020-12-22 05:07:49,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:07:49,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136174373] [2020-12-22 05:07:49,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:07:49,755 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:07:49,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1970764763] [2020-12-22 05:07:49,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:07:50,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:07:50,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-22 05:07:50,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:07:50,539 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 05:07:50,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136174373] [2020-12-22 05:07:50,541 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:07:50,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970764763] [2020-12-22 05:07:50,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:07:50,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:07:50,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951094368] [2020-12-22 05:07:50,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:07:50,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:07:50,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:07:50,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:07:50,543 INFO L87 Difference]: Start difference. First operand 141 states and 159 transitions. Second operand 10 states. [2020-12-22 05:08:01,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:08:01,259 INFO L93 Difference]: Finished difference Result 153 states and 166 transitions. [2020-12-22 05:08:01,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:08:01,259 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-12-22 05:08:01,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:08:01,261 INFO L225 Difference]: With dead ends: 153 [2020-12-22 05:08:01,261 INFO L226 Difference]: Without dead ends: 134 [2020-12-22 05:08:01,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:08:01,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-12-22 05:08:01,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 132. [2020-12-22 05:08:01,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-22 05:08:01,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 146 transitions. [2020-12-22 05:08:01,273 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 146 transitions. Word has length 31 [2020-12-22 05:08:01,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:08:01,274 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 146 transitions. [2020-12-22 05:08:01,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:08:01,274 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 146 transitions. [2020-12-22 05:08:01,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:08:01,275 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:08:01,275 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:08:01,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:08:01,480 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_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 05:08:01,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:08:01,481 INFO L82 PathProgramCache]: Analyzing trace with hash 298448647, now seen corresponding path program 2 times [2020-12-22 05:08:01,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:08:01,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010877894] [2020-12-22 05:08:01,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:08:01,507 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:08:01,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1005626092] [2020-12-22 05:08:01,508 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 05:08:17,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:08:17,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:08:17,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 43 conjunts are in the unsatisfiable core [2020-12-22 05:08:17,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:08:18,392 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 05:08:18,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010877894] [2020-12-22 05:08:18,392 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:08:18,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005626092] [2020-12-22 05:08:18,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:08:18,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-22 05:08:18,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125213027] [2020-12-22 05:08:18,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 05:08:18,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:08:18,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 05:08:18,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:08:18,395 INFO L87 Difference]: Start difference. First operand 132 states and 146 transitions. Second operand 12 states. [2020-12-22 05:08:30,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:08:30,227 INFO L93 Difference]: Finished difference Result 138 states and 149 transitions. [2020-12-22 05:08:30,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:08:30,228 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2020-12-22 05:08:30,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:08:30,229 INFO L225 Difference]: With dead ends: 138 [2020-12-22 05:08:30,229 INFO L226 Difference]: Without dead ends: 136 [2020-12-22 05:08:30,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2020-12-22 05:08:30,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-12-22 05:08:30,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 132. [2020-12-22 05:08:30,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-22 05:08:30,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 145 transitions. [2020-12-22 05:08:30,243 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 145 transitions. Word has length 31 [2020-12-22 05:08:30,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:08:30,243 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 145 transitions. [2020-12-22 05:08:30,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 05:08:30,243 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 145 transitions. [2020-12-22 05:08:30,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:08:30,245 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:08:30,245 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:08:30,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 05:08:30,456 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_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 05:08:30,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:08:30,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1216942657, now seen corresponding path program 3 times [2020-12-22 05:08:30,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:08:30,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998119200] [2020-12-22 05:08:30,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:08:30,467 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:08:30,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1509122114] [2020-12-22 05:08:30,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:08:30,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 05:08:30,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:08:30,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-22 05:08:30,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:08:30,938 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:08:31,317 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 35 [2020-12-22 05:08:31,581 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:08:31,665 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:08:31,690 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 05:08:31,723 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 05:08:31,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998119200] [2020-12-22 05:08:31,728 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:08:31,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509122114] [2020-12-22 05:08:31,728 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2020-12-22 05:08:31,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:08:31,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-22 05:08:31,729 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-22 05:08:31,729 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 05:08:31,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:08:31,955 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-22 05:08:31,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:08:31 BoogieIcfgContainer [2020-12-22 05:08:31,956 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:08:31,957 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:08:31,957 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:08:31,957 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:08:31,958 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:06:07" (3/4) ... [2020-12-22 05:08:31,962 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 05:08:31,962 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:08:31,964 INFO L168 Benchmark]: Toolchain (without parser) took 147366.41 ms. Allocated memory is still 151.0 MB. Free memory was 127.4 MB in the beginning and 67.5 MB in the end (delta: 59.9 MB). Peak memory consumption was 60.5 MB. Max. memory is 8.0 GB. [2020-12-22 05:08:31,964 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:08:31,972 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.68 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 116.6 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 05:08:31,976 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.82 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 114.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:08:31,977 INFO L168 Benchmark]: Boogie Preprocessor took 30.05 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 113.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:08:31,979 INFO L168 Benchmark]: RCFGBuilder took 2635.55 ms. Allocated memory is still 151.0 MB. Free memory was 113.3 MB in the beginning and 128.8 MB in the end (delta: -15.5 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:08:31,980 INFO L168 Benchmark]: TraceAbstraction took 144362.56 ms. Allocated memory is still 151.0 MB. Free memory was 128.3 MB in the beginning and 68.0 MB in the end (delta: 60.3 MB). Peak memory consumption was 61.3 MB. Max. memory is 8.0 GB. [2020-12-22 05:08:31,981 INFO L168 Benchmark]: Witness Printer took 5.62 ms. Allocated memory is still 151.0 MB. Free memory was 68.0 MB in the beginning and 67.5 MB in the end (delta: 519.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:08:31,992 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 278.68 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 116.6 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 45.82 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 114.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.05 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 113.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2635.55 ms. Allocated memory is still 151.0 MB. Free memory was 113.3 MB in the beginning and 128.8 MB in the end (delta: -15.5 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 144362.56 ms. Allocated memory is still 151.0 MB. Free memory was 128.3 MB in the beginning and 68.0 MB in the end (delta: 60.3 MB). Peak memory consumption was 61.3 MB. Max. memory is 8.0 GB. * Witness Printer took 5.62 ms. Allocated memory is still 151.0 MB. Free memory was 68.0 MB in the beginning and 67.5 MB in the end (delta: 519.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L20] unsigned int n, p, q, r, h; [L22] n = __VERIFIER_nondet_uint() [L9] COND FALSE !(!cond) [L9] COND FALSE !(!cond) [L26] p = 0 [L27] q = 1 [L28] r = n [L29] h = 0 [L30] COND TRUE 1 [L31] COND FALSE !(!(q <= n)) [L34] q = 4 * q [L30] COND TRUE 1 [L31] COND FALSE !(!(q <= n)) [L34] q = 4 * q [L30] COND TRUE 1 [L31] COND FALSE !(!(q <= n)) [L34] q = 4 * q [L30] COND TRUE 1 [L31] COND TRUE !(q <= n) [L38] COND TRUE 1 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L46] COND FALSE !(!(q != 1)) [L49] q = q / 4 [L50] h = p + q [L51] p = p / 2 [L52] COND TRUE r >= h [L53] p = p + q [L54] r = r - h [L38] COND TRUE 1 [L12] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 50 locations, 9 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 144.2s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 119.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 370 SDtfs, 957 SDslu, 1198 SDs, 0 SdLazy, 1570 SolverSat, 344 SolverUnsat, 48 SolverUnknown, 0 SolverNotchecked, 111.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 257 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=141occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 79 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 17.5s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 226 NumberOfCodeBlocks, 226 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 215 ConstructedInterpolants, 0 QuantifiedInterpolants, 70611 SizeOfPredicates, 64 NumberOfNonLiveVariables, 766 ConjunctsInSsa, 214 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 2/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...