/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/egcd-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 20:19:03,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 20:19:03,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 20:19:04,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 20:19:04,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 20:19:04,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 20:19:04,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 20:19:04,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 20:19:04,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 20:19:04,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 20:19:04,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 20:19:04,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 20:19:04,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 20:19:04,056 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 20:19:04,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 20:19:04,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 20:19:04,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 20:19:04,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 20:19:04,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 20:19:04,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 20:19:04,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 20:19:04,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 20:19:04,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 20:19:04,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 20:19:04,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 20:19:04,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 20:19:04,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 20:19:04,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 20:19:04,098 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 20:19:04,115 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 20:19:04,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 20:19:04,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 20:19:04,129 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 20:19:04,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 20:19:04,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 20:19:04,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 20:19:04,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 20:19:04,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 20:19:04,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 20:19:04,130 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 20:19:04,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 20:19:04,131 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 20:19:04,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 20:19:04,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 20:19:04,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 20:19:04,132 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 20:19:04,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 20:19:04,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 20:19:04,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 20:19:04,132 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 20:19:04,133 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 20:19:04,134 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 20:19:04,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 20:19:04,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 20:19:04,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 20:19:04,511 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 20:19:04,511 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 20:19:04,512 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_valuebound5.c [2021-05-02 20:19:04,577 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e74fb81f/4d2e13549f9249cc95119b422a7e908a/FLAGbda6de896 [2021-05-02 20:19:05,281 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 20:19:05,281 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_valuebound5.c [2021-05-02 20:19:05,288 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e74fb81f/4d2e13549f9249cc95119b422a7e908a/FLAGbda6de896 [2021-05-02 20:19:05,449 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e74fb81f/4d2e13549f9249cc95119b422a7e908a [2021-05-02 20:19:05,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 20:19:05,452 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 20:19:05,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 20:19:05,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 20:19:05,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 20:19:05,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:19:05" (1/1) ... [2021-05-02 20:19:05,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2011da15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:19:05, skipping insertion in model container [2021-05-02 20:19:05,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:19:05" (1/1) ... [2021-05-02 20:19:05,469 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 20:19:05,483 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 20:19:05,608 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/egcd-ll_valuebound5.c[489,502] [2021-05-02 20:19:05,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:19:05,633 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 20:19:05,645 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/egcd-ll_valuebound5.c[489,502] [2021-05-02 20:19:05,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:19:05,664 INFO L208 MainTranslator]: Completed translation [2021-05-02 20:19:05,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:19:05 WrapperNode [2021-05-02 20:19:05,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 20:19:05,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 20:19:05,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 20:19:05,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 20:19:05,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:19:05" (1/1) ... [2021-05-02 20:19:05,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:19:05" (1/1) ... [2021-05-02 20:19:05,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:19:05" (1/1) ... [2021-05-02 20:19:05,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:19:05" (1/1) ... [2021-05-02 20:19:05,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:19:05" (1/1) ... [2021-05-02 20:19:05,710 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:19:05" (1/1) ... [2021-05-02 20:19:05,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:19:05" (1/1) ... [2021-05-02 20:19:05,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 20:19:05,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 20:19:05,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 20:19:05,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 20:19:05,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:19:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 20:19:05,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 20:19:05,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 20:19:05,809 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 20:19:05,809 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 20:19:05,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 20:19:05,809 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 20:19:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 20:19:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 20:19:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 20:19:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 20:19:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 20:19:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 20:19:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 20:19:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 20:19:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 20:19:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 20:19:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 20:19:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 20:19:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 20:19:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 20:19:06,017 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 20:19:06,017 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 20:19:06,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:19:06 BoogieIcfgContainer [2021-05-02 20:19:06,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 20:19:06,020 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 20:19:06,020 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 20:19:06,020 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 20:19:06,023 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:19:06" (1/1) ... [2021-05-02 20:19:06,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:19:06 BasicIcfg [2021-05-02 20:19:06,040 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 20:19:06,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 20:19:06,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 20:19:06,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 20:19:06,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 08:19:05" (1/4) ... [2021-05-02 20:19:06,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a268374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:19:06, skipping insertion in model container [2021-05-02 20:19:06,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:19:05" (2/4) ... [2021-05-02 20:19:06,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a268374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:19:06, skipping insertion in model container [2021-05-02 20:19:06,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:19:06" (3/4) ... [2021-05-02 20:19:06,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a268374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 08:19:06, skipping insertion in model container [2021-05-02 20:19:06,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:19:06" (4/4) ... [2021-05-02 20:19:06,047 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound5.cJordan [2021-05-02 20:19:06,051 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 20:19:06,055 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 20:19:06,069 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 20:19:06,085 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 20:19:06,085 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 20:19:06,085 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 20:19:06,085 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 20:19:06,086 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 20:19:06,086 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 20:19:06,086 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 20:19:06,086 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 20:19:06,113 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-02 20:19:06,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 20:19:06,119 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:19:06,120 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:19:06,120 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:19:06,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:19:06,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1381881312, now seen corresponding path program 1 times [2021-05-02 20:19:06,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:19:06,151 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573753093] [2021-05-02 20:19:06,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:19:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:19:06,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 20:19:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:19:06,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 20:19:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:19:06,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 20:19:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:19:06,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 20:19:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:19:06,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-02 20:19:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:19:06,462 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-02 20:19:06,463 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:19:06,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573753093] [2021-05-02 20:19:06,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573753093] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:19:06,465 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:19:06,465 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 20:19:06,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686622110] [2021-05-02 20:19:06,470 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 20:19:06,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:19:06,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 20:19:06,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:19:06,485 INFO L87 Difference]: Start difference. First operand has 37 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 20:19:06,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:19:06,634 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2021-05-02 20:19:06,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 20:19:06,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2021-05-02 20:19:06,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:19:06,645 INFO L225 Difference]: With dead ends: 37 [2021-05-02 20:19:06,646 INFO L226 Difference]: Without dead ends: 32 [2021-05-02 20:19:06,648 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:19:06,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-02 20:19:06,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-05-02 20:19:06,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-02 20:19:06,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2021-05-02 20:19:06,681 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 33 [2021-05-02 20:19:06,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:19:06,681 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2021-05-02 20:19:06,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 20:19:06,682 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2021-05-02 20:19:06,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 20:19:06,684 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:19:06,685 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:19:06,695 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 20:19:06,696 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:19:06,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:19:06,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1975235811, now seen corresponding path program 1 times [2021-05-02 20:19:06,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:19:06,698 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852876234] [2021-05-02 20:19:06,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:19:06,735 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:19:06,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [392329302] [2021-05-02 20:19:06,736 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 [2021-05-02 20:19:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:19:06,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 20:19:06,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:19:06,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:06,935 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-05-02 20:19:06,935 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:19:06,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852876234] [2021-05-02 20:19:06,936 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:19:06,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392329302] [2021-05-02 20:19:06,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392329302] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:19:06,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:19:06,936 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-02 20:19:06,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915328745] [2021-05-02 20:19:06,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 20:19:06,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:19:06,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 20:19:06,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-02 20:19:06,939 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-05-02 20:19:07,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:19:07,019 INFO L93 Difference]: Finished difference Result 46 states and 63 transitions. [2021-05-02 20:19:07,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 20:19:07,020 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33 [2021-05-02 20:19:07,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:19:07,021 INFO L225 Difference]: With dead ends: 46 [2021-05-02 20:19:07,021 INFO L226 Difference]: Without dead ends: 46 [2021-05-02 20:19:07,022 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 35.9ms TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-05-02 20:19:07,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-05-02 20:19:07,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2021-05-02 20:19:07,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 23 states have internal predecessors, (26), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-02 20:19:07,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 62 transitions. [2021-05-02 20:19:07,031 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 62 transitions. Word has length 33 [2021-05-02 20:19:07,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:19:07,031 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 62 transitions. [2021-05-02 20:19:07,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-05-02 20:19:07,031 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 62 transitions. [2021-05-02 20:19:07,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-05-02 20:19:07,032 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:19:07,032 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:19:07,253 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 20:19:07,253 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:19:07,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:19:07,254 INFO L82 PathProgramCache]: Analyzing trace with hash -759782395, now seen corresponding path program 1 times [2021-05-02 20:19:07,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:19:07,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025282547] [2021-05-02 20:19:07,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:19:07,268 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:19:07,268 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [342031134] [2021-05-02 20:19:07,268 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 [2021-05-02 20:19:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:19:07,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-02 20:19:07,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:19:07,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:07,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:07,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:07,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:07,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:07,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:07,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:07,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:07,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:07,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:07,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:07,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:07,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:07,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:07,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:07,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:07,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:07,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:07,592 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-05-02 20:19:07,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:19:07,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025282547] [2021-05-02 20:19:07,592 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:19:07,593 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342031134] [2021-05-02 20:19:07,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342031134] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:19:07,593 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:19:07,593 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 20:19:07,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488691283] [2021-05-02 20:19:07,594 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 20:19:07,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:19:07,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 20:19:07,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:19:07,595 INFO L87 Difference]: Start difference. First operand 45 states and 62 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2021-05-02 20:19:07,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:19:07,745 INFO L93 Difference]: Finished difference Result 68 states and 100 transitions. [2021-05-02 20:19:07,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 20:19:07,745 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 38 [2021-05-02 20:19:07,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:19:07,750 INFO L225 Difference]: With dead ends: 68 [2021-05-02 20:19:07,750 INFO L226 Difference]: Without dead ends: 68 [2021-05-02 20:19:07,751 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 76.6ms TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-05-02 20:19:07,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-05-02 20:19:07,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 61. [2021-05-02 20:19:07,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 30 states have (on average 1.3) internal successors, (39), 32 states have internal predecessors, (39), 25 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2021-05-02 20:19:07,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 87 transitions. [2021-05-02 20:19:07,771 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 87 transitions. Word has length 38 [2021-05-02 20:19:07,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:19:07,773 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 87 transitions. [2021-05-02 20:19:07,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2021-05-02 20:19:07,773 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 87 transitions. [2021-05-02 20:19:07,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-02 20:19:07,776 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:19:07,781 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1] [2021-05-02 20:19:07,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:19:07,995 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:19:07,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:19:07,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1840397536, now seen corresponding path program 1 times [2021-05-02 20:19:07,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:19:07,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621114520] [2021-05-02 20:19:07,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:19:08,010 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:19:08,010 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1306308276] [2021-05-02 20:19:08,010 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 [2021-05-02 20:19:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:19:08,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 20:19:08,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:19:08,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:08,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:08,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:08,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:08,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:08,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:08,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:08,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:08,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:08,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:08,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:08,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:08,239 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 20:19:08,240 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:19:08,240 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621114520] [2021-05-02 20:19:08,240 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:19:08,240 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306308276] [2021-05-02 20:19:08,240 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306308276] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:19:08,240 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:19:08,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 20:19:08,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276526500] [2021-05-02 20:19:08,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 20:19:08,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:19:08,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 20:19:08,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-05-02 20:19:08,242 INFO L87 Difference]: Start difference. First operand 61 states and 87 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-05-02 20:19:08,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:19:08,408 INFO L93 Difference]: Finished difference Result 66 states and 91 transitions. [2021-05-02 20:19:08,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 20:19:08,408 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 43 [2021-05-02 20:19:08,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:19:08,409 INFO L225 Difference]: With dead ends: 66 [2021-05-02 20:19:08,410 INFO L226 Difference]: Without dead ends: 64 [2021-05-02 20:19:08,410 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 58.6ms TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-05-02 20:19:08,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-05-02 20:19:08,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-05-02 20:19:08,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 35 states have internal predecessors, (42), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-05-02 20:19:08,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 87 transitions. [2021-05-02 20:19:08,416 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 87 transitions. Word has length 43 [2021-05-02 20:19:08,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:19:08,416 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 87 transitions. [2021-05-02 20:19:08,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-05-02 20:19:08,416 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 87 transitions. [2021-05-02 20:19:08,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-02 20:19:08,417 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:19:08,417 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:19:08,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:19:08,629 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:19:08,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:19:08,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1590647429, now seen corresponding path program 1 times [2021-05-02 20:19:08,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:19:08,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991318827] [2021-05-02 20:19:08,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:19:08,641 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:19:08,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1985194600] [2021-05-02 20:19:08,641 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 [2021-05-02 20:19:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:19:08,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-02 20:19:08,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:19:08,788 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-05-02 20:19:08,788 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:19:08,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991318827] [2021-05-02 20:19:08,789 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:19:08,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985194600] [2021-05-02 20:19:08,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985194600] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:19:08,789 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:19:08,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 20:19:08,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687303680] [2021-05-02 20:19:08,790 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 20:19:08,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:19:08,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 20:19:08,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-02 20:19:08,791 INFO L87 Difference]: Start difference. First operand 64 states and 87 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-05-02 20:19:08,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:19:08,826 INFO L93 Difference]: Finished difference Result 68 states and 90 transitions. [2021-05-02 20:19:08,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 20:19:08,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 49 [2021-05-02 20:19:08,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:19:08,828 INFO L225 Difference]: With dead ends: 68 [2021-05-02 20:19:08,828 INFO L226 Difference]: Without dead ends: 68 [2021-05-02 20:19:08,828 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-02 20:19:08,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-05-02 20:19:08,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-05-02 20:19:08,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 36 states have (on average 1.25) internal successors, (45), 38 states have internal predecessors, (45), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-05-02 20:19:08,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 90 transitions. [2021-05-02 20:19:08,834 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 90 transitions. Word has length 49 [2021-05-02 20:19:08,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:19:08,834 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 90 transitions. [2021-05-02 20:19:08,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-05-02 20:19:08,835 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 90 transitions. [2021-05-02 20:19:08,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-02 20:19:08,835 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:19:08,836 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 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, 1, 1, 1] [2021-05-02 20:19:09,059 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:19:09,059 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:19:09,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:19:09,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1766531305, now seen corresponding path program 1 times [2021-05-02 20:19:09,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:19:09,060 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300464492] [2021-05-02 20:19:09,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:19:09,070 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:19:09,070 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [126249550] [2021-05-02 20:19:09,070 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 [2021-05-02 20:19:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:19:09,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 20:19:09,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:19:09,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:09,294 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-05-02 20:19:09,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:19:09,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300464492] [2021-05-02 20:19:09,294 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:19:09,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126249550] [2021-05-02 20:19:09,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126249550] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:19:09,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:19:09,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-02 20:19:09,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823805528] [2021-05-02 20:19:09,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 20:19:09,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:19:09,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 20:19:09,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-02 20:19:09,296 INFO L87 Difference]: Start difference. First operand 68 states and 90 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-05-02 20:19:09,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:19:09,381 INFO L93 Difference]: Finished difference Result 82 states and 106 transitions. [2021-05-02 20:19:09,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 20:19:09,381 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 51 [2021-05-02 20:19:09,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:19:09,382 INFO L225 Difference]: With dead ends: 82 [2021-05-02 20:19:09,383 INFO L226 Difference]: Without dead ends: 82 [2021-05-02 20:19:09,383 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 42.1ms TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-05-02 20:19:09,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-05-02 20:19:09,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2021-05-02 20:19:09,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 45 states have internal predecessors, (51), 27 states have call successors, (27), 10 states have call predecessors, (27), 9 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-02 20:19:09,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 102 transitions. [2021-05-02 20:19:09,389 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 102 transitions. Word has length 51 [2021-05-02 20:19:09,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:19:09,389 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 102 transitions. [2021-05-02 20:19:09,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-05-02 20:19:09,390 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 102 transitions. [2021-05-02 20:19:09,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-02 20:19:09,390 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:19:09,391 INFO L523 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:19:09,614 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-05-02 20:19:09,614 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:19:09,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:19:09,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1046589490, now seen corresponding path program 1 times [2021-05-02 20:19:09,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:19:09,615 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796883138] [2021-05-02 20:19:09,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:19:09,632 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:19:09,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1703739350] [2021-05-02 20:19:09,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:19:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:19:09,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 20:19:09,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:19:09,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:09,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:09,863 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-05-02 20:19:09,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:19:09,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796883138] [2021-05-02 20:19:09,864 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:19:09,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703739350] [2021-05-02 20:19:09,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703739350] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:19:09,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:19:09,864 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 20:19:09,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457690681] [2021-05-02 20:19:09,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 20:19:09,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:19:09,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 20:19:09,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-05-02 20:19:09,865 INFO L87 Difference]: Start difference. First operand 79 states and 102 transitions. Second operand has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-05-02 20:19:09,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:19:09,995 INFO L93 Difference]: Finished difference Result 86 states and 110 transitions. [2021-05-02 20:19:09,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 20:19:09,997 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 54 [2021-05-02 20:19:09,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:19:10,002 INFO L225 Difference]: With dead ends: 86 [2021-05-02 20:19:10,003 INFO L226 Difference]: Without dead ends: 84 [2021-05-02 20:19:10,003 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 75.9ms TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-05-02 20:19:10,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-05-02 20:19:10,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-05-02 20:19:10,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 49 states have internal predecessors, (53), 27 states have call successors, (27), 11 states have call predecessors, (27), 10 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2021-05-02 20:19:10,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 105 transitions. [2021-05-02 20:19:10,019 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 105 transitions. Word has length 54 [2021-05-02 20:19:10,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:19:10,020 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 105 transitions. [2021-05-02 20:19:10,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-05-02 20:19:10,020 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 105 transitions. [2021-05-02 20:19:10,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-02 20:19:10,021 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:19:10,021 INFO L523 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:19:10,229 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:19:10,229 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:19:10,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:19:10,229 INFO L82 PathProgramCache]: Analyzing trace with hash -2126309122, now seen corresponding path program 1 times [2021-05-02 20:19:10,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:19:10,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537162483] [2021-05-02 20:19:10,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:19:10,242 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:19:10,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1214711286] [2021-05-02 20:19:10,243 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 [2021-05-02 20:19:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:19:10,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-02 20:19:10,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:19:10,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:10,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:10,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:10,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:10,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:10,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:10,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:10,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:10,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:10,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:10,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:10,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:10,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:10,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:10,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:10,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:10,614 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 10 proven. 19 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-05-02 20:19:10,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:19:10,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537162483] [2021-05-02 20:19:10,615 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:19:10,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214711286] [2021-05-02 20:19:10,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214711286] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:19:10,615 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:19:10,615 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 20:19:10,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893737916] [2021-05-02 20:19:10,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 20:19:10,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:19:10,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 20:19:10,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-05-02 20:19:10,616 INFO L87 Difference]: Start difference. First operand 84 states and 105 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2021-05-02 20:19:10,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:19:10,880 INFO L93 Difference]: Finished difference Result 116 states and 145 transitions. [2021-05-02 20:19:10,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 20:19:10,880 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 56 [2021-05-02 20:19:10,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:19:10,884 INFO L225 Difference]: With dead ends: 116 [2021-05-02 20:19:10,884 INFO L226 Difference]: Without dead ends: 116 [2021-05-02 20:19:10,885 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 134.3ms TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-05-02 20:19:10,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-05-02 20:19:10,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2021-05-02 20:19:10,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 64 states have (on average 1.15625) internal successors, (74), 67 states have internal predecessors, (74), 33 states have call successors, (33), 15 states have call predecessors, (33), 14 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) [2021-05-02 20:19:10,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 138 transitions. [2021-05-02 20:19:10,892 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 138 transitions. Word has length 56 [2021-05-02 20:19:10,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:19:10,892 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 138 transitions. [2021-05-02 20:19:10,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2021-05-02 20:19:10,893 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 138 transitions. [2021-05-02 20:19:10,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-02 20:19:10,893 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:19:10,894 INFO L523 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:19:11,112 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:19:11,113 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:19:11,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:19:11,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1746772058, now seen corresponding path program 2 times [2021-05-02 20:19:11,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:19:11,114 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485559274] [2021-05-02 20:19:11,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:19:11,138 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:19:11,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1895514050] [2021-05-02 20:19:11,138 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 [2021-05-02 20:19:11,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 20:19:11,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:19:11,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-02 20:19:11,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:19:11,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:11,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:11,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:11,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:11,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:11,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:11,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:11,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:11,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:11,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:11,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:11,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:11,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:11,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:11,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:11,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:11,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:11,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:11,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:11,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:11,434 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-05-02 20:19:11,434 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:19:11,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485559274] [2021-05-02 20:19:11,434 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:19:11,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895514050] [2021-05-02 20:19:11,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895514050] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:19:11,434 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:19:11,434 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 20:19:11,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536263181] [2021-05-02 20:19:11,435 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 20:19:11,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:19:11,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 20:19:11,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:19:11,436 INFO L87 Difference]: Start difference. First operand 112 states and 138 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-05-02 20:19:11,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:19:11,598 INFO L93 Difference]: Finished difference Result 135 states and 176 transitions. [2021-05-02 20:19:11,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 20:19:11,603 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 61 [2021-05-02 20:19:11,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:19:11,605 INFO L225 Difference]: With dead ends: 135 [2021-05-02 20:19:11,605 INFO L226 Difference]: Without dead ends: 131 [2021-05-02 20:19:11,605 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 74.0ms TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-05-02 20:19:11,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-05-02 20:19:11,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-05-02 20:19:11,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 73 states have (on average 1.178082191780822) internal successors, (86), 77 states have internal predecessors, (86), 42 states have call successors, (42), 16 states have call predecessors, (42), 15 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-02 20:19:11,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 167 transitions. [2021-05-02 20:19:11,612 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 167 transitions. Word has length 61 [2021-05-02 20:19:11,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:19:11,613 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 167 transitions. [2021-05-02 20:19:11,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-05-02 20:19:11,613 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 167 transitions. [2021-05-02 20:19:11,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-02 20:19:11,614 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:19:11,614 INFO L523 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:19:11,837 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-05-02 20:19:11,837 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:19:11,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:19:11,837 INFO L82 PathProgramCache]: Analyzing trace with hash -296466288, now seen corresponding path program 1 times [2021-05-02 20:19:11,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:19:11,838 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497600468] [2021-05-02 20:19:11,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:19:11,847 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:19:11,847 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [861041806] [2021-05-02 20:19:11,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:19:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:19:11,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 20:19:11,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:19:11,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:11,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:11,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:12,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:12,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:12,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:12,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:12,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:12,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:12,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:12,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:12,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:12,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:12,179 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 13 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-05-02 20:19:12,180 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:19:12,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497600468] [2021-05-02 20:19:12,180 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:19:12,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861041806] [2021-05-02 20:19:12,180 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861041806] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:19:12,180 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:19:12,180 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 20:19:12,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418587066] [2021-05-02 20:19:12,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 20:19:12,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:19:12,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 20:19:12,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:19:12,183 INFO L87 Difference]: Start difference. First operand 131 states and 167 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-05-02 20:19:12,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:19:12,411 INFO L93 Difference]: Finished difference Result 149 states and 191 transitions. [2021-05-02 20:19:12,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 20:19:12,417 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 69 [2021-05-02 20:19:12,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:19:12,420 INFO L225 Difference]: With dead ends: 149 [2021-05-02 20:19:12,421 INFO L226 Difference]: Without dead ends: 149 [2021-05-02 20:19:12,421 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 121.3ms TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-05-02 20:19:12,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-05-02 20:19:12,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 147. [2021-05-02 20:19:12,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 81 states have (on average 1.1728395061728396) internal successors, (95), 86 states have internal predecessors, (95), 48 states have call successors, (48), 18 states have call predecessors, (48), 17 states have return successors, (45), 42 states have call predecessors, (45), 45 states have call successors, (45) [2021-05-02 20:19:12,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 188 transitions. [2021-05-02 20:19:12,441 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 188 transitions. Word has length 69 [2021-05-02 20:19:12,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:19:12,442 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 188 transitions. [2021-05-02 20:19:12,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-05-02 20:19:12,442 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 188 transitions. [2021-05-02 20:19:12,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-02 20:19:12,445 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:19:12,445 INFO L523 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:19:12,669 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:19:12,669 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:19:12,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:19:12,670 INFO L82 PathProgramCache]: Analyzing trace with hash -392102192, now seen corresponding path program 2 times [2021-05-02 20:19:12,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:19:12,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895300218] [2021-05-02 20:19:12,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:19:12,686 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:19:12,686 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1743187752] [2021-05-02 20:19:12,686 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:19:12,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 20:19:12,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:19:12,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 20:19:12,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:19:12,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:12,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:12,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:12,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:12,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:12,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:12,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:12,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:12,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:12,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:12,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:12,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:12,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:12,967 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 13 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-05-02 20:19:12,967 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:19:12,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895300218] [2021-05-02 20:19:12,968 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:19:12,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743187752] [2021-05-02 20:19:12,968 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743187752] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:19:12,968 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:19:12,968 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 20:19:12,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192797483] [2021-05-02 20:19:12,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 20:19:12,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:19:12,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 20:19:12,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:19:12,969 INFO L87 Difference]: Start difference. First operand 147 states and 188 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-05-02 20:19:13,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:19:13,197 INFO L93 Difference]: Finished difference Result 164 states and 210 transitions. [2021-05-02 20:19:13,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 20:19:13,198 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 69 [2021-05-02 20:19:13,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:19:13,199 INFO L225 Difference]: With dead ends: 164 [2021-05-02 20:19:13,199 INFO L226 Difference]: Without dead ends: 161 [2021-05-02 20:19:13,200 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 117.3ms TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-05-02 20:19:13,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-05-02 20:19:13,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160. [2021-05-02 20:19:13,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 89 states have (on average 1.1573033707865168) internal successors, (103), 94 states have internal predecessors, (103), 51 states have call successors, (51), 20 states have call predecessors, (51), 19 states have return successors, (48), 45 states have call predecessors, (48), 48 states have call successors, (48) [2021-05-02 20:19:13,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 202 transitions. [2021-05-02 20:19:13,206 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 202 transitions. Word has length 69 [2021-05-02 20:19:13,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:19:13,207 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 202 transitions. [2021-05-02 20:19:13,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-05-02 20:19:13,207 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 202 transitions. [2021-05-02 20:19:13,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-02 20:19:13,208 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:19:13,208 INFO L523 BasicCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:19:13,431 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:19:13,432 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:19:13,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:19:13,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1674813879, now seen corresponding path program 2 times [2021-05-02 20:19:13,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:19:13,432 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57574173] [2021-05-02 20:19:13,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:19:13,441 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:19:13,441 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020492255] [2021-05-02 20:19:13,441 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:19:13,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 20:19:13,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:19:13,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 46 conjunts are in the unsatisfiable core [2021-05-02 20:19:13,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:19:13,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:13,830 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 20 proven. 18 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-05-02 20:19:13,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:19:13,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57574173] [2021-05-02 20:19:13,831 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:19:13,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020492255] [2021-05-02 20:19:13,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020492255] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:19:13,831 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:19:13,831 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 20:19:13,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895258337] [2021-05-02 20:19:13,832 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 20:19:13,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:19:13,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 20:19:13,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-05-02 20:19:13,833 INFO L87 Difference]: Start difference. First operand 160 states and 202 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2021-05-02 20:19:14,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:19:14,063 INFO L93 Difference]: Finished difference Result 188 states and 239 transitions. [2021-05-02 20:19:14,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 20:19:14,064 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 74 [2021-05-02 20:19:14,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:19:14,065 INFO L225 Difference]: With dead ends: 188 [2021-05-02 20:19:14,065 INFO L226 Difference]: Without dead ends: 188 [2021-05-02 20:19:14,065 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 115.1ms TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-05-02 20:19:14,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-05-02 20:19:14,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2021-05-02 20:19:14,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 104 states have (on average 1.1634615384615385) internal successors, (121), 109 states have internal predecessors, (121), 57 states have call successors, (57), 23 states have call predecessors, (57), 22 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2021-05-02 20:19:14,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 232 transitions. [2021-05-02 20:19:14,095 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 232 transitions. Word has length 74 [2021-05-02 20:19:14,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:19:14,095 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 232 transitions. [2021-05-02 20:19:14,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2021-05-02 20:19:14,095 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 232 transitions. [2021-05-02 20:19:14,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-02 20:19:14,096 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:19:14,096 INFO L523 BasicCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 3, 3, 3, 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] [2021-05-02 20:19:14,320 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-05-02 20:19:14,320 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:19:14,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:19:14,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1927051720, now seen corresponding path program 3 times [2021-05-02 20:19:14,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:19:14,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971804733] [2021-05-02 20:19:14,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:19:14,331 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:19:14,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2043126229] [2021-05-02 20:19:14,331 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:19:14,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-02 20:19:14,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:19:14,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-02 20:19:14,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:19:14,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:14,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:14,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:14,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:14,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:14,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:14,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:14,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:14,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:14,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:14,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:14,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:14,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:14,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:14,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:14,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:14,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:14,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:14,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:14,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:14,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:14,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:14,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:14,790 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-05-02 20:19:14,790 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:19:14,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971804733] [2021-05-02 20:19:14,790 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:19:14,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043126229] [2021-05-02 20:19:14,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043126229] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:19:14,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:19:14,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 20:19:14,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536717049] [2021-05-02 20:19:14,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 20:19:14,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:19:14,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 20:19:14,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:19:14,792 INFO L87 Difference]: Start difference. First operand 184 states and 232 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2021-05-02 20:19:15,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:19:15,029 INFO L93 Difference]: Finished difference Result 211 states and 264 transitions. [2021-05-02 20:19:15,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 20:19:15,030 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 74 [2021-05-02 20:19:15,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:19:15,031 INFO L225 Difference]: With dead ends: 211 [2021-05-02 20:19:15,031 INFO L226 Difference]: Without dead ends: 211 [2021-05-02 20:19:15,031 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 133.5ms TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-05-02 20:19:15,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-05-02 20:19:15,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 197. [2021-05-02 20:19:15,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 114 states have (on average 1.1578947368421053) internal successors, (132), 119 states have internal predecessors, (132), 57 states have call successors, (57), 26 states have call predecessors, (57), 25 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2021-05-02 20:19:15,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 243 transitions. [2021-05-02 20:19:15,038 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 243 transitions. Word has length 74 [2021-05-02 20:19:15,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:19:15,039 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 243 transitions. [2021-05-02 20:19:15,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2021-05-02 20:19:15,039 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 243 transitions. [2021-05-02 20:19:15,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-05-02 20:19:15,040 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:19:15,040 INFO L523 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:19:15,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-02 20:19:15,253 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:19:15,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:19:15,253 INFO L82 PathProgramCache]: Analyzing trace with hash 504849037, now seen corresponding path program 4 times [2021-05-02 20:19:15,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:19:15,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236083016] [2021-05-02 20:19:15,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:19:15,261 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:19:15,261 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2022094245] [2021-05-02 20:19:15,261 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:19:15,336 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 20:19:15,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:19:15,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 50 conjunts are in the unsatisfiable core [2021-05-02 20:19:15,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:19:15,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:15,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:15,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:15,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:15,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:15,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:15,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:15,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:15,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:15,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:15,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:15,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:15,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:15,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:15,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:15,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:15,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:15,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:15,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:15,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:15,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:15,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:15,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:15,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:15,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:15,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:15,724 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 53 proven. 22 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-05-02 20:19:15,724 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:19:15,724 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236083016] [2021-05-02 20:19:15,724 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:19:15,724 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022094245] [2021-05-02 20:19:15,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022094245] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:19:15,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:19:15,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-05-02 20:19:15,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648977048] [2021-05-02 20:19:15,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 20:19:15,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:19:15,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 20:19:15,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-05-02 20:19:15,726 INFO L87 Difference]: Start difference. First operand 197 states and 243 transitions. Second operand has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 6 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2021-05-02 20:19:16,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:19:16,146 INFO L93 Difference]: Finished difference Result 217 states and 270 transitions. [2021-05-02 20:19:16,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 20:19:16,147 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 6 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) Word has length 79 [2021-05-02 20:19:16,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:19:16,148 INFO L225 Difference]: With dead ends: 217 [2021-05-02 20:19:16,148 INFO L226 Difference]: Without dead ends: 212 [2021-05-02 20:19:16,148 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 216.3ms TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-05-02 20:19:16,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-05-02 20:19:16,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 175. [2021-05-02 20:19:16,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 103 states have (on average 1.145631067961165) internal successors, (118), 107 states have internal predecessors, (118), 48 states have call successors, (48), 24 states have call predecessors, (48), 23 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) [2021-05-02 20:19:16,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 211 transitions. [2021-05-02 20:19:16,155 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 211 transitions. Word has length 79 [2021-05-02 20:19:16,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:19:16,155 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 211 transitions. [2021-05-02 20:19:16,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 6 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2021-05-02 20:19:16,155 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 211 transitions. [2021-05-02 20:19:16,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-05-02 20:19:16,156 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:19:16,156 INFO L523 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:19:16,368 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-02 20:19:16,369 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:19:16,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:19:16,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1530341036, now seen corresponding path program 3 times [2021-05-02 20:19:16,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:19:16,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420704555] [2021-05-02 20:19:16,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:19:16,377 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:19:16,378 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1589555940] [2021-05-02 20:19:16,378 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:19:16,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-02 20:19:16,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:19:16,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 44 conjunts are in the unsatisfiable core [2021-05-02 20:19:16,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:19:16,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:16,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:16,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:16,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:16,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:16,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:16,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:16,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:16,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:16,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:16,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:16,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:16,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:16,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:16,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:16,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:16,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:16,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:16,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:16,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:16,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:16,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:16,725 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 42 proven. 18 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-05-02 20:19:16,726 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:19:16,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420704555] [2021-05-02 20:19:16,726 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:19:16,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589555940] [2021-05-02 20:19:16,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589555940] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:19:16,726 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:19:16,726 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-05-02 20:19:16,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264995142] [2021-05-02 20:19:16,727 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 20:19:16,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:19:16,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 20:19:16,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-05-02 20:19:16,727 INFO L87 Difference]: Start difference. First operand 175 states and 211 transitions. Second operand has 13 states, 12 states have (on average 2.25) internal successors, (27), 10 states have internal predecessors, (27), 6 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2021-05-02 20:19:17,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:19:17,120 INFO L93 Difference]: Finished difference Result 207 states and 256 transitions. [2021-05-02 20:19:17,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 20:19:17,121 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 10 states have internal predecessors, (27), 6 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 79 [2021-05-02 20:19:17,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:19:17,123 INFO L225 Difference]: With dead ends: 207 [2021-05-02 20:19:17,123 INFO L226 Difference]: Without dead ends: 202 [2021-05-02 20:19:17,125 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 130.5ms TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-05-02 20:19:17,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-05-02 20:19:17,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 199. [2021-05-02 20:19:17,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 118 states have (on average 1.152542372881356) internal successors, (136), 122 states have internal predecessors, (136), 54 states have call successors, (54), 27 states have call predecessors, (54), 26 states have return successors, (51), 49 states have call predecessors, (51), 51 states have call successors, (51) [2021-05-02 20:19:17,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 241 transitions. [2021-05-02 20:19:17,134 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 241 transitions. Word has length 79 [2021-05-02 20:19:17,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:19:17,134 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 241 transitions. [2021-05-02 20:19:17,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 10 states have internal predecessors, (27), 6 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2021-05-02 20:19:17,135 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 241 transitions. [2021-05-02 20:19:17,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-02 20:19:17,136 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:19:17,136 INFO L523 BasicCegarLoop]: trace histogram [10, 9, 9, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:19:17,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:19:17,361 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:19:17,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:19:17,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1037601673, now seen corresponding path program 5 times [2021-05-02 20:19:17,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:19:17,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435622695] [2021-05-02 20:19:17,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:19:17,366 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:19:17,367 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [178187793] [2021-05-02 20:19:17,367 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:19:17,460 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-05-02 20:19:17,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:19:17,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 20:19:17,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:19:17,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:17,638 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 20 proven. 28 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-05-02 20:19:17,639 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:19:17,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435622695] [2021-05-02 20:19:17,639 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:19:17,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178187793] [2021-05-02 20:19:17,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178187793] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:19:17,639 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:19:17,639 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 20:19:17,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141747343] [2021-05-02 20:19:17,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 20:19:17,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:19:17,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 20:19:17,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 20:19:17,640 INFO L87 Difference]: Start difference. First operand 199 states and 241 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-05-02 20:19:17,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:19:17,784 INFO L93 Difference]: Finished difference Result 229 states and 286 transitions. [2021-05-02 20:19:17,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 20:19:17,784 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 87 [2021-05-02 20:19:17,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:19:17,786 INFO L225 Difference]: With dead ends: 229 [2021-05-02 20:19:17,786 INFO L226 Difference]: Without dead ends: 229 [2021-05-02 20:19:17,786 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:19:17,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-05-02 20:19:17,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 216. [2021-05-02 20:19:17,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 125 states have (on average 1.16) internal successors, (145), 130 states have internal predecessors, (145), 63 states have call successors, (63), 28 states have call predecessors, (63), 27 states have return successors, (60), 57 states have call predecessors, (60), 60 states have call successors, (60) [2021-05-02 20:19:17,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 268 transitions. [2021-05-02 20:19:17,794 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 268 transitions. Word has length 87 [2021-05-02 20:19:17,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:19:17,794 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 268 transitions. [2021-05-02 20:19:17,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-05-02 20:19:17,794 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 268 transitions. [2021-05-02 20:19:17,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-02 20:19:17,795 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:19:17,795 INFO L523 BasicCegarLoop]: trace histogram [10, 9, 9, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:19:18,009 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-02 20:19:18,009 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:19:18,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:19:18,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1133237577, now seen corresponding path program 6 times [2021-05-02 20:19:18,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:19:18,010 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155272519] [2021-05-02 20:19:18,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:19:18,019 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:19:18,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1283575000] [2021-05-02 20:19:18,020 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:19:18,085 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-05-02 20:19:18,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:19:18,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-02 20:19:18,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:19:18,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:18,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:18,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:18,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:18,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:18,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:18,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:18,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:18,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:18,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:18,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:18,344 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 27 proven. 24 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-05-02 20:19:18,344 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:19:18,344 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155272519] [2021-05-02 20:19:18,345 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:19:18,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283575000] [2021-05-02 20:19:18,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283575000] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:19:18,345 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:19:18,345 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 20:19:18,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972001975] [2021-05-02 20:19:18,347 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 20:19:18,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:19:18,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 20:19:18,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-05-02 20:19:18,348 INFO L87 Difference]: Start difference. First operand 216 states and 268 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 9 states have internal predecessors, (27), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2021-05-02 20:19:18,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:19:18,615 INFO L93 Difference]: Finished difference Result 239 states and 300 transitions. [2021-05-02 20:19:18,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 20:19:18,616 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 9 states have internal predecessors, (27), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 87 [2021-05-02 20:19:18,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:19:18,617 INFO L225 Difference]: With dead ends: 239 [2021-05-02 20:19:18,617 INFO L226 Difference]: Without dead ends: 236 [2021-05-02 20:19:18,618 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 181.7ms TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-05-02 20:19:18,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-05-02 20:19:18,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 235. [2021-05-02 20:19:18,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 136 states have (on average 1.1544117647058822) internal successors, (157), 141 states have internal predecessors, (157), 69 states have call successors, (69), 30 states have call predecessors, (69), 29 states have return successors, (66), 63 states have call predecessors, (66), 66 states have call successors, (66) [2021-05-02 20:19:18,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 292 transitions. [2021-05-02 20:19:18,625 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 292 transitions. Word has length 87 [2021-05-02 20:19:18,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:19:18,626 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 292 transitions. [2021-05-02 20:19:18,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 9 states have internal predecessors, (27), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2021-05-02 20:19:18,626 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 292 transitions. [2021-05-02 20:19:18,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-02 20:19:18,627 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:19:18,627 INFO L523 BasicCegarLoop]: trace histogram [10, 9, 9, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:19:18,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-02 20:19:18,845 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:19:18,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:19:18,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1104608426, now seen corresponding path program 7 times [2021-05-02 20:19:18,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:19:18,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820862449] [2021-05-02 20:19:18,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:19:18,854 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:19:18,854 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430012845] [2021-05-02 20:19:18,854 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:19:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:19:18,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 20:19:18,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:19:18,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:18,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:18,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:19,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:19,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:19,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:19,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:19,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:19,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:19,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:19,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:19,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:19,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:19,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:19,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:19,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:19,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:19,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:19,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:19,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:19,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:19,208 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 24 proven. 27 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-05-02 20:19:19,209 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:19:19,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820862449] [2021-05-02 20:19:19,209 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:19:19,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430012845] [2021-05-02 20:19:19,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430012845] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:19:19,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:19:19,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 20:19:19,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165794593] [2021-05-02 20:19:19,211 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 20:19:19,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:19:19,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 20:19:19,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-05-02 20:19:19,212 INFO L87 Difference]: Start difference. First operand 235 states and 292 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 10 states have internal predecessors, (27), 6 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2021-05-02 20:19:19,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:19:19,554 INFO L93 Difference]: Finished difference Result 249 states and 313 transitions. [2021-05-02 20:19:19,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 20:19:19,555 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 10 states have internal predecessors, (27), 6 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 87 [2021-05-02 20:19:19,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:19:19,557 INFO L225 Difference]: With dead ends: 249 [2021-05-02 20:19:19,557 INFO L226 Difference]: Without dead ends: 249 [2021-05-02 20:19:19,558 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 199.5ms TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-05-02 20:19:19,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-05-02 20:19:19,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 247. [2021-05-02 20:19:19,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 141 states have (on average 1.1560283687943262) internal successors, (163), 147 states have internal predecessors, (163), 75 states have call successors, (75), 31 states have call predecessors, (75), 30 states have return successors, (72), 68 states have call predecessors, (72), 72 states have call successors, (72) [2021-05-02 20:19:19,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 310 transitions. [2021-05-02 20:19:19,568 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 310 transitions. Word has length 87 [2021-05-02 20:19:19,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:19:19,568 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 310 transitions. [2021-05-02 20:19:19,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 10 states have internal predecessors, (27), 6 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2021-05-02 20:19:19,568 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 310 transitions. [2021-05-02 20:19:19,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-02 20:19:19,570 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:19:19,570 INFO L523 BasicCegarLoop]: trace histogram [10, 9, 9, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:19:19,784 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-02 20:19:19,785 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:19:19,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:19:19,785 INFO L82 PathProgramCache]: Analyzing trace with hash -942157577, now seen corresponding path program 8 times [2021-05-02 20:19:19,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:19:19,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701330911] [2021-05-02 20:19:19,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:19:19,791 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:19:19,791 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1585147125] [2021-05-02 20:19:19,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:19:19,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 20:19:19,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:19:19,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 20:19:19,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:19:19,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:19,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:19,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:19,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:19,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:19,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:19,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:19,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:19,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:20,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:20,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:20,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:20,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:20,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:20,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:20,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:20,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:20,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:20,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:20,102 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 27 proven. 24 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-05-02 20:19:20,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:19:20,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701330911] [2021-05-02 20:19:20,102 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:19:20,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585147125] [2021-05-02 20:19:20,103 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585147125] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:19:20,103 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:19:20,103 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 20:19:20,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482821910] [2021-05-02 20:19:20,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 20:19:20,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:19:20,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 20:19:20,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-05-02 20:19:20,105 INFO L87 Difference]: Start difference. First operand 247 states and 310 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 10 states have internal predecessors, (27), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2021-05-02 20:19:20,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:19:20,382 INFO L93 Difference]: Finished difference Result 260 states and 329 transitions. [2021-05-02 20:19:20,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 20:19:20,383 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 10 states have internal predecessors, (27), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 87 [2021-05-02 20:19:20,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:19:20,384 INFO L225 Difference]: With dead ends: 260 [2021-05-02 20:19:20,384 INFO L226 Difference]: Without dead ends: 257 [2021-05-02 20:19:20,385 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 170.8ms TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-05-02 20:19:20,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-05-02 20:19:20,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 247. [2021-05-02 20:19:20,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 141 states have (on average 1.1560283687943262) internal successors, (163), 147 states have internal predecessors, (163), 75 states have call successors, (75), 31 states have call predecessors, (75), 30 states have return successors, (72), 68 states have call predecessors, (72), 72 states have call successors, (72) [2021-05-02 20:19:20,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 310 transitions. [2021-05-02 20:19:20,392 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 310 transitions. Word has length 87 [2021-05-02 20:19:20,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:19:20,392 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 310 transitions. [2021-05-02 20:19:20,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 10 states have internal predecessors, (27), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2021-05-02 20:19:20,392 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 310 transitions. [2021-05-02 20:19:20,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-02 20:19:20,393 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:19:20,393 INFO L523 BasicCegarLoop]: trace histogram [10, 9, 9, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:19:20,609 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:19:20,609 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:19:20,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:19:20,609 INFO L82 PathProgramCache]: Analyzing trace with hash -913528426, now seen corresponding path program 9 times [2021-05-02 20:19:20,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:19:20,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378464783] [2021-05-02 20:19:20,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:19:20,620 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:19:20,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1890180960] [2021-05-02 20:19:20,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:19:20,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-02 20:19:20,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:19:20,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-02 20:19:20,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:19:20,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:20,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:20,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:20,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:20,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:20,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:20,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:20,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:20,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:20,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:20,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:20,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:20,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:20,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:20,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:20,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:20,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:20,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:20,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:20,940 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 57 proven. 12 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2021-05-02 20:19:20,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:19:20,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378464783] [2021-05-02 20:19:20,941 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:19:20,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890180960] [2021-05-02 20:19:20,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890180960] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:19:20,941 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:19:20,941 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 20:19:20,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228134918] [2021-05-02 20:19:20,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 20:19:20,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:19:20,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 20:19:20,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-05-02 20:19:20,942 INFO L87 Difference]: Start difference. First operand 247 states and 310 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-05-02 20:19:27,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:19:27,149 INFO L93 Difference]: Finished difference Result 251 states and 313 transitions. [2021-05-02 20:19:27,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 20:19:27,150 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 87 [2021-05-02 20:19:27,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:19:27,151 INFO L225 Difference]: With dead ends: 251 [2021-05-02 20:19:27,151 INFO L226 Difference]: Without dead ends: 248 [2021-05-02 20:19:27,151 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 115.9ms TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-05-02 20:19:27,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-05-02 20:19:27,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 228. [2021-05-02 20:19:27,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 136 states have (on average 1.1323529411764706) internal successors, (154), 141 states have internal predecessors, (154), 61 states have call successors, (61), 31 states have call predecessors, (61), 30 states have return successors, (59), 55 states have call predecessors, (59), 59 states have call successors, (59) [2021-05-02 20:19:27,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 274 transitions. [2021-05-02 20:19:27,158 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 274 transitions. Word has length 87 [2021-05-02 20:19:27,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:19:27,158 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 274 transitions. [2021-05-02 20:19:27,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-05-02 20:19:27,159 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 274 transitions. [2021-05-02 20:19:27,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-02 20:19:27,159 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:19:27,159 INFO L523 BasicCegarLoop]: trace histogram [10, 9, 9, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:19:27,377 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:19:27,377 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:19:27,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:19:27,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1009164330, now seen corresponding path program 10 times [2021-05-02 20:19:27,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:19:27,378 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802983144] [2021-05-02 20:19:27,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:19:27,382 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:19:27,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [670390384] [2021-05-02 20:19:27,382 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:19:27,427 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 20:19:27,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:19:27,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 38 conjunts are in the unsatisfiable core [2021-05-02 20:19:27,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:19:27,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:27,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:27,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:27,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:27,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:27,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:27,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:27,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:27,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:27,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:27,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:27,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:27,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:27,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:27,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:27,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:27,703 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 24 proven. 27 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-05-02 20:19:27,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:19:27,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802983144] [2021-05-02 20:19:27,704 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:19:27,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670390384] [2021-05-02 20:19:27,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670390384] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:19:27,704 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:19:27,704 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 20:19:27,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520838323] [2021-05-02 20:19:27,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 20:19:27,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:19:27,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 20:19:27,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-05-02 20:19:27,705 INFO L87 Difference]: Start difference. First operand 228 states and 274 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 10 states have internal predecessors, (27), 6 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2021-05-02 20:19:28,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:19:28,042 INFO L93 Difference]: Finished difference Result 238 states and 287 transitions. [2021-05-02 20:19:28,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 20:19:28,043 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 10 states have internal predecessors, (27), 6 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 87 [2021-05-02 20:19:28,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:19:28,044 INFO L225 Difference]: With dead ends: 238 [2021-05-02 20:19:28,044 INFO L226 Difference]: Without dead ends: 238 [2021-05-02 20:19:28,044 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 229.6ms TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-05-02 20:19:28,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-05-02 20:19:28,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 234. [2021-05-02 20:19:28,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 140 states have (on average 1.1285714285714286) internal successors, (158), 146 states have internal predecessors, (158), 62 states have call successors, (62), 32 states have call predecessors, (62), 31 states have return successors, (60), 55 states have call predecessors, (60), 60 states have call successors, (60) [2021-05-02 20:19:28,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 280 transitions. [2021-05-02 20:19:28,051 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 280 transitions. Word has length 87 [2021-05-02 20:19:28,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:19:28,051 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 280 transitions. [2021-05-02 20:19:28,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 10 states have internal predecessors, (27), 6 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2021-05-02 20:19:28,052 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 280 transitions. [2021-05-02 20:19:28,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-05-02 20:19:28,052 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:19:28,052 INFO L523 BasicCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:19:28,253 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-05-02 20:19:28,253 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:19:28,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:19:28,253 INFO L82 PathProgramCache]: Analyzing trace with hash -428683728, now seen corresponding path program 3 times [2021-05-02 20:19:28,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:19:28,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417294531] [2021-05-02 20:19:28,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:19:28,260 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:19:28,260 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [781244608] [2021-05-02 20:19:28,260 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:19:28,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-02 20:19:28,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:19:28,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-02 20:19:28,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:19:28,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:28,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:28,549 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 82 proven. 18 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-05-02 20:19:28,550 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:19:28,550 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417294531] [2021-05-02 20:19:28,550 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:19:28,550 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781244608] [2021-05-02 20:19:28,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781244608] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:19:28,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:19:28,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 20:19:28,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857562832] [2021-05-02 20:19:28,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 20:19:28,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:19:28,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 20:19:28,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-05-02 20:19:28,552 INFO L87 Difference]: Start difference. First operand 234 states and 280 transitions. Second operand has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 6 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2021-05-02 20:19:32,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:19:32,716 INFO L93 Difference]: Finished difference Result 266 states and 321 transitions. [2021-05-02 20:19:32,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 20:19:32,716 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 6 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 92 [2021-05-02 20:19:32,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:19:32,718 INFO L225 Difference]: With dead ends: 266 [2021-05-02 20:19:32,718 INFO L226 Difference]: Without dead ends: 266 [2021-05-02 20:19:32,718 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 100.2ms TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-05-02 20:19:32,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-05-02 20:19:32,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 252. [2021-05-02 20:19:32,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 152 states have (on average 1.131578947368421) internal successors, (172), 158 states have internal predecessors, (172), 65 states have call successors, (65), 35 states have call predecessors, (65), 34 states have return successors, (63), 58 states have call predecessors, (63), 63 states have call successors, (63) [2021-05-02 20:19:32,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 300 transitions. [2021-05-02 20:19:32,726 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 300 transitions. Word has length 92 [2021-05-02 20:19:32,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:19:32,726 INFO L480 AbstractCegarLoop]: Abstraction has 252 states and 300 transitions. [2021-05-02 20:19:32,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 6 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2021-05-02 20:19:32,727 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 300 transitions. [2021-05-02 20:19:32,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-05-02 20:19:32,727 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:19:32,727 INFO L523 BasicCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:19:32,940 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-05-02 20:19:32,941 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:19:32,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:19:32,941 INFO L82 PathProgramCache]: Analyzing trace with hash 264417969, now seen corresponding path program 11 times [2021-05-02 20:19:32,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:19:32,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480258442] [2021-05-02 20:19:32,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:19:32,952 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:19:32,952 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [533900884] [2021-05-02 20:19:32,952 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:19:33,042 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-05-02 20:19:33,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:19:33,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 46 conjunts are in the unsatisfiable core [2021-05-02 20:19:33,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:19:33,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:33,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:38,662 WARN L159 QuantifierPusher]: Ignoring assumption.