/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/ps2-ll_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 10:13:48,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 10:13:48,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 10:13:48,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 10:13:48,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 10:13:48,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 10:13:48,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 10:13:49,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 10:13:49,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 10:13:49,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 10:13:49,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 10:13:49,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 10:13:49,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 10:13:49,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 10:13:49,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 10:13:49,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 10:13:49,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 10:13:49,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 10:13:49,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 10:13:49,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 10:13:49,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 10:13:49,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 10:13:49,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 10:13:49,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 10:13:49,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 10:13:49,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 10:13:49,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 10:13:49,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 10:13:49,050 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 10:13:49,066 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 10:13:49,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 10:13:49,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 10:13:49,069 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 10:13:49,069 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 10:13:49,069 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 10:13:49,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 10:13:49,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 10:13:49,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 10:13:49,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 10:13:49,070 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 10:13:49,071 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 10:13:49,071 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 10:13:49,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 10:13:49,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 10:13:49,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 10:13:49,072 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 10:13:49,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 10:13:49,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 10:13:49,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 10:13:49,072 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 10:13:49,073 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 10:13:49,074 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 10:13:49,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 10:13:49,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 10:13:49,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 10:13:49,426 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 10:13:49,426 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 10:13:49,427 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps2-ll_unwindbound5.c [2021-05-06 10:13:49,488 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d39e65717/05600791162542358cc9e836324c0bd3/FLAGa753d35c5 [2021-05-06 10:13:49,853 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 10:13:49,853 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps2-ll_unwindbound5.c [2021-05-06 10:13:49,858 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d39e65717/05600791162542358cc9e836324c0bd3/FLAGa753d35c5 [2021-05-06 10:13:49,874 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d39e65717/05600791162542358cc9e836324c0bd3 [2021-05-06 10:13:49,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 10:13:49,881 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 10:13:49,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 10:13:49,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 10:13:49,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 10:13:49,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 10:13:49" (1/1) ... [2021-05-06 10:13:49,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5805d283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:13:49, skipping insertion in model container [2021-05-06 10:13:49,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 10:13:49" (1/1) ... [2021-05-06 10:13:49,897 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 10:13:49,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 10:13:50,058 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps2-ll_unwindbound5.c[454,467] [2021-05-06 10:13:50,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 10:13:50,081 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 10:13:50,093 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps2-ll_unwindbound5.c[454,467] [2021-05-06 10:13:50,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 10:13:50,113 INFO L208 MainTranslator]: Completed translation [2021-05-06 10:13:50,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:13:50 WrapperNode [2021-05-06 10:13:50,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 10:13:50,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 10:13:50,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 10:13:50,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 10:13:50,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:13:50" (1/1) ... [2021-05-06 10:13:50,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:13:50" (1/1) ... [2021-05-06 10:13:50,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:13:50" (1/1) ... [2021-05-06 10:13:50,133 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:13:50" (1/1) ... [2021-05-06 10:13:50,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:13:50" (1/1) ... [2021-05-06 10:13:50,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:13:50" (1/1) ... [2021-05-06 10:13:50,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:13:50" (1/1) ... [2021-05-06 10:13:50,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 10:13:50,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 10:13:50,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 10:13:50,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 10:13:50,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:13:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 10:13:50,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 10:13:50,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 10:13:50,259 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 10:13:50,259 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 10:13:50,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 10:13:50,259 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 10:13:50,260 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 10:13:50,260 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 10:13:50,260 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 10:13:50,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 10:13:50,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 10:13:50,260 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 10:13:50,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 10:13:50,261 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 10:13:50,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 10:13:50,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 10:13:50,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 10:13:50,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 10:13:50,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 10:13:50,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 10:13:50,531 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 10:13:50,531 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 10:13:50,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 10:13:50 BoogieIcfgContainer [2021-05-06 10:13:50,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 10:13:50,533 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 10:13:50,533 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 10:13:50,534 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 10:13:50,536 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 10:13:50" (1/1) ... [2021-05-06 10:13:50,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 10:13:50 BasicIcfg [2021-05-06 10:13:50,564 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 10:13:50,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 10:13:50,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 10:13:50,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 10:13:50,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 10:13:49" (1/4) ... [2021-05-06 10:13:50,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6c5ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 10:13:50, skipping insertion in model container [2021-05-06 10:13:50,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:13:50" (2/4) ... [2021-05-06 10:13:50,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6c5ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 10:13:50, skipping insertion in model container [2021-05-06 10:13:50,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 10:13:50" (3/4) ... [2021-05-06 10:13:50,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6c5ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 10:13:50, skipping insertion in model container [2021-05-06 10:13:50,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 10:13:50" (4/4) ... [2021-05-06 10:13:50,570 INFO L111 eAbstractionObserver]: Analyzing ICFG ps2-ll_unwindbound5.cJordan [2021-05-06 10:13:50,575 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 10:13:50,578 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 10:13:50,591 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 10:13:50,607 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 10:13:50,607 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 10:13:50,607 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 10:13:50,607 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 10:13:50,607 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 10:13:50,608 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 10:13:50,608 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 10:13:50,608 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 10:13:50,617 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 10:13:50,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-06 10:13:50,622 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:13:50,623 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:13:50,623 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:13:50,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:13:50,628 INFO L82 PathProgramCache]: Analyzing trace with hash -630084848, now seen corresponding path program 1 times [2021-05-06 10:13:50,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:13:50,635 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594762245] [2021-05-06 10:13:50,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:13:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 10:13:50,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 10:13:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 10:13:50,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 10:13:50,799 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:13:50,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594762245] [2021-05-06 10:13:50,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594762245] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 10:13:50,800 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 10:13:50,800 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 10:13:50,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173393836] [2021-05-06 10:13:50,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 10:13:50,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:13:50,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 10:13:50,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 10:13:50,817 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 10:13:50,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:13:50,865 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-05-06 10:13:50,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 10:13:50,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-06 10:13:50,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:13:50,872 INFO L225 Difference]: With dead ends: 23 [2021-05-06 10:13:50,873 INFO L226 Difference]: Without dead ends: 18 [2021-05-06 10:13:50,874 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 10:13:50,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-06 10:13:50,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-05-06 10:13:50,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 10:13:50,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-05-06 10:13:50,900 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2021-05-06 10:13:50,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:13:50,900 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-05-06 10:13:50,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 10:13:50,901 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-05-06 10:13:50,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 10:13:50,901 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:13:50,902 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:13:50,902 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 10:13:50,902 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:13:50,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:13:50,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1971636769, now seen corresponding path program 1 times [2021-05-06 10:13:50,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:13:50,903 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641358682] [2021-05-06 10:13:50,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:13:50,918 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 10:13:50,919 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1572918355] [2021-05-06 10:13:50,919 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 [2021-05-06 10:13:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 10:13:50,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-06 10:13:50,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 10:13:51,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:51,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:51,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:51,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:51,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:51,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 10:13:51,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:13:51,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641358682] [2021-05-06 10:13:51,082 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 10:13:51,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572918355] [2021-05-06 10:13:51,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572918355] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 10:13:51,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 10:13:51,083 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 10:13:51,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516614946] [2021-05-06 10:13:51,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 10:13:51,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:13:51,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 10:13:51,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 10:13:51,086 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 10:13:51,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:13:51,095 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-05-06 10:13:51,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 10:13:51,096 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-06 10:13:51,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:13:51,096 INFO L225 Difference]: With dead ends: 19 [2021-05-06 10:13:51,097 INFO L226 Difference]: Without dead ends: 19 [2021-05-06 10:13:51,097 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 10:13:51,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-06 10:13:51,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-05-06 10:13:51,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 10:13:51,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-05-06 10:13:51,101 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2021-05-06 10:13:51,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:13:51,101 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-05-06 10:13:51,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 10:13:51,101 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-05-06 10:13:51,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 10:13:51,102 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:13:51,102 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:13:51,326 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-06 10:13:51,326 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:13:51,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:13:51,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1972709245, now seen corresponding path program 1 times [2021-05-06 10:13:51,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:13:51,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698345182] [2021-05-06 10:13:51,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:13:51,340 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 10:13:51,340 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1166934406] [2021-05-06 10:13:51,341 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 [2021-05-06 10:13:51,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 10:13:51,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 10:13:51,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 10:13:51,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:51,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 10:13:51,482 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:13:51,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698345182] [2021-05-06 10:13:51,483 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 10:13:51,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166934406] [2021-05-06 10:13:51,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166934406] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 10:13:51,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 10:13:51,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 10:13:51,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879950172] [2021-05-06 10:13:51,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 10:13:51,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:13:51,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 10:13:51,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 10:13:51,485 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 10:13:51,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:13:51,542 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-05-06 10:13:51,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 10:13:51,544 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-06 10:13:51,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:13:51,545 INFO L225 Difference]: With dead ends: 26 [2021-05-06 10:13:51,545 INFO L226 Difference]: Without dead ends: 25 [2021-05-06 10:13:51,545 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-06 10:13:51,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-06 10:13:51,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-05-06 10:13:51,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 10:13:51,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-05-06 10:13:51,549 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 12 [2021-05-06 10:13:51,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:13:51,549 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-05-06 10:13:51,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 10:13:51,549 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-05-06 10:13:51,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-06 10:13:51,550 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:13:51,550 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:13:51,772 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 10:13:51,773 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:13:51,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:13:51,773 INFO L82 PathProgramCache]: Analyzing trace with hash -832305310, now seen corresponding path program 1 times [2021-05-06 10:13:51,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:13:51,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252212659] [2021-05-06 10:13:51,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:13:51,785 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 10:13:51,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [248117441] [2021-05-06 10:13:51,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2021-05-06 10:13:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 10:13:51,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 10:13:51,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 10:13:51,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:51,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:51,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:51,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:51,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:51,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:51,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:51,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:51,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 10:13:51,963 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:13:51,963 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252212659] [2021-05-06 10:13:51,963 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 10:13:51,963 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248117441] [2021-05-06 10:13:51,963 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248117441] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 10:13:51,964 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 10:13:51,964 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-05-06 10:13:51,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038500682] [2021-05-06 10:13:51,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 10:13:51,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:13:51,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 10:13:51,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-06 10:13:51,966 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 10:13:52,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:13:52,009 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2021-05-06 10:13:52,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 10:13:52,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2021-05-06 10:13:52,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:13:52,010 INFO L225 Difference]: With dead ends: 27 [2021-05-06 10:13:52,010 INFO L226 Difference]: Without dead ends: 27 [2021-05-06 10:13:52,011 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.1ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-06 10:13:52,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-06 10:13:52,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-06 10:13:52,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 10:13:52,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2021-05-06 10:13:52,019 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 20 [2021-05-06 10:13:52,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:13:52,019 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2021-05-06 10:13:52,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 10:13:52,019 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2021-05-06 10:13:52,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-06 10:13:52,020 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:13:52,020 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:13:52,243 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 10:13:52,243 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:13:52,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:13:52,244 INFO L82 PathProgramCache]: Analyzing trace with hash -831232834, now seen corresponding path program 1 times [2021-05-06 10:13:52,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:13:52,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573804839] [2021-05-06 10:13:52,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:13:52,262 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 10:13:52,263 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1880761389] [2021-05-06 10:13:52,263 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 [2021-05-06 10:13:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 10:13:52,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-06 10:13:52,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 10:13:52,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:52,433 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 10:13:52,433 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:13:52,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573804839] [2021-05-06 10:13:52,433 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 10:13:52,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880761389] [2021-05-06 10:13:52,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880761389] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 10:13:52,434 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 10:13:52,434 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-06 10:13:52,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892317286] [2021-05-06 10:13:52,435 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 10:13:52,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:13:52,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 10:13:52,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 10:13:52,437 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 10:13:52,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:13:52,481 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2021-05-06 10:13:52,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 10:13:52,482 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2021-05-06 10:13:52,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:13:52,483 INFO L225 Difference]: With dead ends: 34 [2021-05-06 10:13:52,483 INFO L226 Difference]: Without dead ends: 33 [2021-05-06 10:13:52,483 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.8ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-05-06 10:13:52,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-06 10:13:52,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-05-06 10:13:52,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 10:13:52,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-05-06 10:13:52,488 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 20 [2021-05-06 10:13:52,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:13:52,488 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-05-06 10:13:52,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 10:13:52,488 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-05-06 10:13:52,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-06 10:13:52,489 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:13:52,489 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:13:52,705 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 10:13:52,705 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:13:52,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:13:52,705 INFO L82 PathProgramCache]: Analyzing trace with hash -870943837, now seen corresponding path program 2 times [2021-05-06 10:13:52,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:13:52,706 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142093816] [2021-05-06 10:13:52,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:13:52,714 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 10:13:52,714 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [623459763] [2021-05-06 10:13:52,714 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 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 [2021-05-06 10:13:52,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 10:13:52,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 10:13:52,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-06 10:13:52,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 10:13:52,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:52,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:52,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:52,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:52,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:52,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:52,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:52,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:52,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:52,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:52,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:52,857 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 10:13:52,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:13:52,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142093816] [2021-05-06 10:13:52,857 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 10:13:52,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623459763] [2021-05-06 10:13:52,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623459763] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 10:13:52,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 10:13:52,858 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-06 10:13:52,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323137356] [2021-05-06 10:13:52,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 10:13:52,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:13:52,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 10:13:52,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-06 10:13:52,859 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 10:13:52,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:13:52,901 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2021-05-06 10:13:52,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 10:13:52,901 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2021-05-06 10:13:52,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:13:52,902 INFO L225 Difference]: With dead ends: 35 [2021-05-06 10:13:52,902 INFO L226 Difference]: Without dead ends: 35 [2021-05-06 10:13:52,903 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 27.4ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-05-06 10:13:52,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-06 10:13:52,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-05-06 10:13:52,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 10:13:52,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-05-06 10:13:52,907 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 28 [2021-05-06 10:13:52,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:13:52,907 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-05-06 10:13:52,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 10:13:52,907 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-05-06 10:13:52,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-06 10:13:52,908 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:13:52,908 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:13:53,124 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-05-06 10:13:53,124 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:13:53,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:13:53,125 INFO L82 PathProgramCache]: Analyzing trace with hash -869871361, now seen corresponding path program 2 times [2021-05-06 10:13:53,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:13:53,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136849285] [2021-05-06 10:13:53,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:13:53,140 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 10:13:53,140 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1195994841] [2021-05-06 10:13:53,140 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 [2021-05-06 10:13:53,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 10:13:53,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 10:13:53,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-06 10:13:53,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 10:13:53,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:53,311 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 10:13:53,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:13:53,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136849285] [2021-05-06 10:13:53,311 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 10:13:53,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195994841] [2021-05-06 10:13:53,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195994841] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 10:13:53,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 10:13:53,313 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-06 10:13:53,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544951658] [2021-05-06 10:13:53,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 10:13:53,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:13:53,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 10:13:53,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-06 10:13:53,314 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 10:13:53,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:13:53,374 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2021-05-06 10:13:53,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 10:13:53,375 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2021-05-06 10:13:53,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:13:53,375 INFO L225 Difference]: With dead ends: 42 [2021-05-06 10:13:53,376 INFO L226 Difference]: Without dead ends: 41 [2021-05-06 10:13:53,376 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.7ms TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-05-06 10:13:53,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-06 10:13:53,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-05-06 10:13:53,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 29 states have internal predecessors, (31), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 10:13:53,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2021-05-06 10:13:53,380 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 28 [2021-05-06 10:13:53,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:13:53,381 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2021-05-06 10:13:53,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 10:13:53,381 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2021-05-06 10:13:53,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-06 10:13:53,382 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:13:53,382 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:13:53,600 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 10:13:53,601 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:13:53,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:13:53,601 INFO L82 PathProgramCache]: Analyzing trace with hash 2080181988, now seen corresponding path program 3 times [2021-05-06 10:13:53,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:13:53,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778405470] [2021-05-06 10:13:53,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:13:53,610 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 10:13:53,610 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1465052182] [2021-05-06 10:13:53,610 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 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 [2021-05-06 10:13:53,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-05-06 10:13:53,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 10:13:53,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-06 10:13:53,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 10:13:53,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:53,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:53,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:13:53,810 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-06 10:13:53,810 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:13:53,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778405470] [2021-05-06 10:13:53,811 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 10:13:53,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465052182] [2021-05-06 10:13:53,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465052182] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 10:13:53,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 10:13:53,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-06 10:13:53,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604637786] [2021-05-06 10:13:53,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 10:13:53,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:13:53,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 10:13:53,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-06 10:13:53,812 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-06 10:13:53,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:13:53,838 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-05-06 10:13:53,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 10:13:53,838 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2021-05-06 10:13:53,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:13:53,839 INFO L225 Difference]: With dead ends: 39 [2021-05-06 10:13:53,839 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 10:13:53,839 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 32.0ms TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-05-06 10:13:53,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 10:13:53,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 10:13:53,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-06 10:13:53,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 10:13:53,840 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-05-06 10:13:53,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:13:53,840 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 10:13:53,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-06 10:13:53,840 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 10:13:53,840 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 10:13:54,056 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 10:13:54,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 10:13:54 BasicIcfg [2021-05-06 10:13:54,060 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 10:13:54,061 INFO L168 Benchmark]: Toolchain (without parser) took 4180.15 ms. Allocated memory was 201.3 MB in the beginning and 256.9 MB in the end (delta: 55.6 MB). Free memory was 167.3 MB in the beginning and 219.0 MB in the end (delta: -51.7 MB). Peak memory consumption was 4.5 MB. Max. memory is 8.0 GB. [2021-05-06 10:13:54,061 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 201.3 MB. Free memory is still 183.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 10:13:54,061 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.66 ms. Allocated memory is still 201.3 MB. Free memory was 167.1 MB in the beginning and 157.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-06 10:13:54,061 INFO L168 Benchmark]: Boogie Preprocessor took 72.18 ms. Allocated memory is still 201.3 MB. Free memory was 157.4 MB in the beginning and 185.8 MB in the end (delta: -28.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-05-06 10:13:54,062 INFO L168 Benchmark]: RCFGBuilder took 343.34 ms. Allocated memory is still 201.3 MB. Free memory was 185.8 MB in the beginning and 170.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-06 10:13:54,062 INFO L168 Benchmark]: IcfgTransformer took 31.24 ms. Allocated memory is still 201.3 MB. Free memory was 170.6 MB in the beginning and 169.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 10:13:54,062 INFO L168 Benchmark]: TraceAbstraction took 3494.98 ms. Allocated memory was 201.3 MB in the beginning and 256.9 MB in the end (delta: 55.6 MB). Free memory was 169.0 MB in the beginning and 219.0 MB in the end (delta: -50.0 MB). Peak memory consumption was 6.6 MB. Max. memory is 8.0 GB. [2021-05-06 10:13:54,062 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 201.3 MB. Free memory is still 183.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 228.66 ms. Allocated memory is still 201.3 MB. Free memory was 167.1 MB in the beginning and 157.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 72.18 ms. Allocated memory is still 201.3 MB. Free memory was 157.4 MB in the beginning and 185.8 MB in the end (delta: -28.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 343.34 ms. Allocated memory is still 201.3 MB. Free memory was 185.8 MB in the beginning and 170.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 31.24 ms. Allocated memory is still 201.3 MB. Free memory was 170.6 MB in the beginning and 169.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3494.98 ms. Allocated memory was 201.3 MB in the beginning and 256.9 MB in the end (delta: 55.6 MB). Free memory was 169.0 MB in the beginning and 219.0 MB in the end (delta: -50.0 MB). Peak memory consumption was 6.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3452.4ms, OverallIterations: 8, TraceHistogramMax: 4, EmptinessCheckTime: 12.2ms, AutomataDifference: 369.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 146 SDtfs, 38 SDslu, 373 SDs, 0 SdLazy, 154 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 178.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 160 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 206.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=7, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 42.6ms AutomataMinimizationTime, 8 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 67.6ms SsaConstructionTime, 194.8ms SatisfiabilityAnalysisTime, 769.5ms InterpolantComputationTime, 167 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 159 ConstructedInterpolants, 0 QuantifiedInterpolants, 470 SizeOfPredicates, 11 NumberOfNonLiveVariables, 882 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 51/79 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...