/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/egcd2-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 20:30:29,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 20:30:29,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 20:30:29,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 20:30:29,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 20:30:29,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 20:30:29,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 20:30:29,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 20:30:29,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 20:30:29,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 20:30:29,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 20:30:29,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 20:30:29,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 20:30:29,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 20:30:29,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 20:30:29,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 20:30:29,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 20:30:29,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 20:30:29,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 20:30:29,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 20:30:29,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 20:30:29,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 20:30:29,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 20:30:29,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 20:30:29,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 20:30:29,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 20:30:29,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 20:30:29,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 20:30:29,832 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 20:30:29,844 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 20:30:29,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 20:30:29,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 20:30:29,847 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 20:30:29,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 20:30:29,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 20:30:29,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 20:30:29,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 20:30:29,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 20:30:29,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 20:30:29,848 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 20:30:29,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 20:30:29,849 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 20:30:29,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 20:30:29,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 20:30:29,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 20:30:29,849 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 20:30:29,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 20:30:29,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 20:30:29,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 20:30:29,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 20:30:29,850 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 20:30:29,850 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 20:30:30,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 20:30:30,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 20:30:30,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 20:30:30,156 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 20:30:30,156 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 20:30:30,157 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound5.c [2021-05-02 20:30:30,215 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e625cc1ba/5a016101d7d44a8d95d326c24cda5e9a/FLAG3526b1e70 [2021-05-02 20:30:30,610 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 20:30:30,611 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound5.c [2021-05-02 20:30:30,617 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e625cc1ba/5a016101d7d44a8d95d326c24cda5e9a/FLAG3526b1e70 [2021-05-02 20:30:31,012 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e625cc1ba/5a016101d7d44a8d95d326c24cda5e9a [2021-05-02 20:30:31,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 20:30:31,016 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 20:30:31,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 20:30:31,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 20:30:31,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 20:30:31,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:30:31" (1/1) ... [2021-05-02 20:30:31,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bfe2cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:30:31, skipping insertion in model container [2021-05-02 20:30:31,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:30:31" (1/1) ... [2021-05-02 20:30:31,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 20:30:31,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 20:30:31,130 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/egcd2-ll_valuebound5.c[490,503] [2021-05-02 20:30:31,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:30:31,148 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 20:30:31,155 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/egcd2-ll_valuebound5.c[490,503] [2021-05-02 20:30:31,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:30:31,171 INFO L208 MainTranslator]: Completed translation [2021-05-02 20:30:31,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:30:31 WrapperNode [2021-05-02 20:30:31,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 20:30:31,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 20:30:31,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 20:30:31,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 20:30:31,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:30:31" (1/1) ... [2021-05-02 20:30:31,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:30:31" (1/1) ... [2021-05-02 20:30:31,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:30:31" (1/1) ... [2021-05-02 20:30:31,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:30:31" (1/1) ... [2021-05-02 20:30:31,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:30:31" (1/1) ... [2021-05-02 20:30:31,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:30:31" (1/1) ... [2021-05-02 20:30:31,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:30:31" (1/1) ... [2021-05-02 20:30:31,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 20:30:31,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 20:30:31,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 20:30:31,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 20:30:31,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:30:31" (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 20:30:31,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 20:30:31,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 20:30:31,378 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 20:30:31,379 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 20:30:31,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 20:30:31,379 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 20:30:31,379 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 20:30:31,379 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 20:30:31,379 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 20:30:31,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 20:30:31,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 20:30:31,380 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 20:30:31,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 20:30:31,380 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 20:30:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 20:30:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 20:30:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 20:30:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 20:30:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 20:30:31,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 20:30:31,650 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 20:30:31,650 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 20:30:31,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:30:31 BoogieIcfgContainer [2021-05-02 20:30:31,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 20:30:31,652 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 20:30:31,652 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 20:30:31,652 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 20:30:31,654 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:30:31" (1/1) ... [2021-05-02 20:30:31,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:30:31 BasicIcfg [2021-05-02 20:30:31,684 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 20:30:31,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 20:30:31,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 20:30:31,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 20:30:31,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 08:30:31" (1/4) ... [2021-05-02 20:30:31,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aae989c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:30:31, skipping insertion in model container [2021-05-02 20:30:31,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:30:31" (2/4) ... [2021-05-02 20:30:31,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aae989c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:30:31, skipping insertion in model container [2021-05-02 20:30:31,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:30:31" (3/4) ... [2021-05-02 20:30:31,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aae989c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 08:30:31, skipping insertion in model container [2021-05-02 20:30:31,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:30:31" (4/4) ... [2021-05-02 20:30:31,694 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound5.cJordan [2021-05-02 20:30:31,697 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 20:30:31,700 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 20:30:31,735 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 20:30:31,752 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 20:30:31,753 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 20:30:31,753 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 20:30:31,753 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 20:30:31,753 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 20:30:31,753 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 20:30:31,753 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 20:30:31,753 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 20:30:31,774 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-02 20:30:31,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-02 20:30:31,789 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:30:31,790 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 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 20:30:31,790 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:30:31,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:30:31,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1630657446, now seen corresponding path program 1 times [2021-05-02 20:30:31,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:30:31,801 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666969727] [2021-05-02 20:30:31,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:30:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:30:32,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 20:30:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:30:32,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 20:30:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:30:32,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 20:30:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:30:32,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 20:30:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:30:32,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-02 20:30:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:30:32,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-05-02 20:30:32,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:30:32,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-05-02 20:30:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:30:32,076 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-05-02 20:30:32,077 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:30:32,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666969727] [2021-05-02 20:30:32,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666969727] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:30:32,078 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:30:32,078 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 20:30:32,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679436806] [2021-05-02 20:30:32,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 20:30:32,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:30:32,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 20:30:32,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:30:32,095 INFO L87 Difference]: Start difference. First operand has 40 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) 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, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-05-02 20:30:32,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:30:32,251 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2021-05-02 20:30:32,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 20:30:32,254 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, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2021-05-02 20:30:32,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:30:32,259 INFO L225 Difference]: With dead ends: 40 [2021-05-02 20:30:32,259 INFO L226 Difference]: Without dead ends: 35 [2021-05-02 20:30:32,260 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:30:32,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-02 20:30:32,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-05-02 20:30:32,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-02 20:30:32,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2021-05-02 20:30:32,289 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 43 [2021-05-02 20:30:32,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:30:32,290 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2021-05-02 20:30:32,290 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, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-05-02 20:30:32,290 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2021-05-02 20:30:32,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-05-02 20:30:32,291 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:30:32,292 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 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 20:30:32,292 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 20:30:32,292 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:30:32,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:30:32,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1790145708, now seen corresponding path program 1 times [2021-05-02 20:30:32,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:30:32,293 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339992573] [2021-05-02 20:30:32,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:30:32,308 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:30:32,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2040003169] [2021-05-02 20:30:32,309 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 20:30:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:30:32,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 20:30:32,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:30:32,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:32,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:32,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:32,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:32,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:32,503 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-05-02 20:30:32,503 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:30:32,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339992573] [2021-05-02 20:30:32,504 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:30:32,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040003169] [2021-05-02 20:30:32,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040003169] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:30:32,504 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:30:32,504 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-02 20:30:32,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152876210] [2021-05-02 20:30:32,505 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 20:30:32,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:30:32,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 20:30:32,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 20:30:32,506 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-05-02 20:30:32,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:30:32,580 INFO L93 Difference]: Finished difference Result 44 states and 60 transitions. [2021-05-02 20:30:32,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 20:30:32,581 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 44 [2021-05-02 20:30:32,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:30:32,582 INFO L225 Difference]: With dead ends: 44 [2021-05-02 20:30:32,582 INFO L226 Difference]: Without dead ends: 44 [2021-05-02 20:30:32,583 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 27.1ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-05-02 20:30:32,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-05-02 20:30:32,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2021-05-02 20:30:32,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-02 20:30:32,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2021-05-02 20:30:32,589 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 44 [2021-05-02 20:30:32,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:30:32,589 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2021-05-02 20:30:32,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-05-02 20:30:32,589 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2021-05-02 20:30:32,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-02 20:30:32,590 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:30:32,590 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 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 20:30:32,807 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 20:30:32,807 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:30:32,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:30:32,808 INFO L82 PathProgramCache]: Analyzing trace with hash 375385207, now seen corresponding path program 1 times [2021-05-02 20:30:32,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:30:32,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534276547] [2021-05-02 20:30:32,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:30:32,825 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:30:32,826 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1238666488] [2021-05-02 20:30:32,826 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 20:30:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:30:32,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 20:30:32,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:30:32,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:33,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:33,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:33,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:33,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:33,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:33,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:33,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:33,077 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-05-02 20:30:33,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:30:33,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534276547] [2021-05-02 20:30:33,078 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:30:33,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238666488] [2021-05-02 20:30:33,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238666488] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:30:33,078 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:30:33,078 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 20:30:33,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388567666] [2021-05-02 20:30:33,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 20:30:33,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:30:33,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 20:30:33,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-05-02 20:30:33,080 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-05-02 20:30:33,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:30:33,201 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2021-05-02 20:30:33,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 20:30:33,202 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 45 [2021-05-02 20:30:33,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:30:33,203 INFO L225 Difference]: With dead ends: 55 [2021-05-02 20:30:33,203 INFO L226 Difference]: Without dead ends: 55 [2021-05-02 20:30:33,204 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 58.8ms TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-05-02 20:30:33,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-05-02 20:30:33,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 43. [2021-05-02 20:30:33,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 25 states have internal predecessors, (26), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-02 20:30:33,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2021-05-02 20:30:33,209 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 45 [2021-05-02 20:30:33,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:30:33,209 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2021-05-02 20:30:33,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-05-02 20:30:33,209 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2021-05-02 20:30:33,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-02 20:30:33,210 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:30:33,210 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:30:33,433 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:30:33,433 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:30:33,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:30:33,434 INFO L82 PathProgramCache]: Analyzing trace with hash -788787523, now seen corresponding path program 1 times [2021-05-02 20:30:33,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:30:33,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273856604] [2021-05-02 20:30:33,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:30:33,452 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:30:33,452 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [736719149] [2021-05-02 20:30:33,452 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 20:30:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:30:33,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 20:30:33,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:30:33,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:33,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:33,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:33,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:33,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:33,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:33,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:33,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:33,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:33,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:33,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:33,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:33,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:33,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:33,697 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 5 proven. 21 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-05-02 20:30:33,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:30:33,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273856604] [2021-05-02 20:30:33,698 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:30:33,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736719149] [2021-05-02 20:30:33,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736719149] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:30:33,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:30:33,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 20:30:33,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487203706] [2021-05-02 20:30:33,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 20:30:33,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:30:33,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 20:30:33,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-05-02 20:30:33,699 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-05-02 20:30:33,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:30:33,789 INFO L93 Difference]: Finished difference Result 54 states and 69 transitions. [2021-05-02 20:30:33,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 20:30:33,790 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 50 [2021-05-02 20:30:33,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:30:33,792 INFO L225 Difference]: With dead ends: 54 [2021-05-02 20:30:33,792 INFO L226 Difference]: Without dead ends: 54 [2021-05-02 20:30:33,792 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 46.8ms TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-05-02 20:30:33,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-05-02 20:30:33,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2021-05-02 20:30:33,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 30 states have internal predecessors, (32), 19 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-02 20:30:33,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2021-05-02 20:30:33,797 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 50 [2021-05-02 20:30:33,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:30:33,797 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2021-05-02 20:30:33,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-05-02 20:30:33,798 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2021-05-02 20:30:33,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-02 20:30:33,798 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:30:33,798 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1] [2021-05-02 20:30:34,014 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:30:34,015 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:30:34,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:30:34,015 INFO L82 PathProgramCache]: Analyzing trace with hash -735644649, now seen corresponding path program 1 times [2021-05-02 20:30:34,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:30:34,016 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105846623] [2021-05-02 20:30:34,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:30:34,036 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:30:34,036 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [906628698] [2021-05-02 20:30:34,036 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 20:30:34,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:30:34,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 20:30:34,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:30:34,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,240 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 7 proven. 21 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-05-02 20:30:34,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:30:34,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105846623] [2021-05-02 20:30:34,241 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:30:34,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906628698] [2021-05-02 20:30:34,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906628698] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:30:34,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:30:34,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 20:30:34,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922688126] [2021-05-02 20:30:34,242 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 20:30:34,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:30:34,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 20:30:34,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-05-02 20:30:34,242 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-05-02 20:30:34,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:30:34,340 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2021-05-02 20:30:34,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 20:30:34,340 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 55 [2021-05-02 20:30:34,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:30:34,341 INFO L225 Difference]: With dead ends: 58 [2021-05-02 20:30:34,341 INFO L226 Difference]: Without dead ends: 58 [2021-05-02 20:30:34,342 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 45.0ms TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-05-02 20:30:34,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-05-02 20:30:34,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2021-05-02 20:30:34,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 33 states have internal predecessors, (35), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-02 20:30:34,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2021-05-02 20:30:34,346 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 55 [2021-05-02 20:30:34,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:30:34,346 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2021-05-02 20:30:34,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-05-02 20:30:34,346 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2021-05-02 20:30:34,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-05-02 20:30:34,347 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:30:34,347 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1] [2021-05-02 20:30:34,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:30:34,565 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:30:34,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:30:34,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1700404515, now seen corresponding path program 1 times [2021-05-02 20:30:34,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:30:34,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341401857] [2021-05-02 20:30:34,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:30:34,574 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:30:34,575 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [206799236] [2021-05-02 20:30:34,575 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 20:30:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:30:34,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 20:30:34,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:30:34,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:34,802 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-05-02 20:30:34,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:30:34,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341401857] [2021-05-02 20:30:34,802 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:30:34,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206799236] [2021-05-02 20:30:34,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206799236] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:30:34,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:30:34,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 20:30:34,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984774943] [2021-05-02 20:30:34,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 20:30:34,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:30:34,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 20:30:34,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:30:34,804 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-05-02 20:30:39,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:30:39,009 INFO L93 Difference]: Finished difference Result 62 states and 75 transitions. [2021-05-02 20:30:39,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 20:30:39,010 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 60 [2021-05-02 20:30:39,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:30:39,010 INFO L225 Difference]: With dead ends: 62 [2021-05-02 20:30:39,010 INFO L226 Difference]: Without dead ends: 62 [2021-05-02 20:30:39,011 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 65.3ms TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-05-02 20:30:39,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-05-02 20:30:39,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2021-05-02 20:30:39,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 36 states have internal predecessors, (38), 19 states have call successors, (19), 8 states have call predecessors, (19), 7 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-02 20:30:39,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 74 transitions. [2021-05-02 20:30:39,014 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 74 transitions. Word has length 60 [2021-05-02 20:30:39,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:30:39,015 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 74 transitions. [2021-05-02 20:30:39,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-05-02 20:30:39,015 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2021-05-02 20:30:39,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-05-02 20:30:39,015 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:30:39,016 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:30:39,231 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-05-02 20:30:39,231 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:30:39,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:30:39,231 INFO L82 PathProgramCache]: Analyzing trace with hash 14033329, now seen corresponding path program 1 times [2021-05-02 20:30:39,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:30:39,231 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269617533] [2021-05-02 20:30:39,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:30:39,240 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:30:39,240 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1658872896] [2021-05-02 20:30:39,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 20:30:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:30:39,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 20:30:39,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:30:39,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:39,454 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-05-02 20:30:39,455 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:30:39,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269617533] [2021-05-02 20:30:39,455 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:30:39,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658872896] [2021-05-02 20:30:39,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658872896] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:30:39,455 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:30:39,455 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 20:30:39,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708835866] [2021-05-02 20:30:39,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 20:30:39,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:30:39,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 20:30:39,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-02 20:30:39,456 INFO L87 Difference]: Start difference. First operand 61 states and 74 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-05-02 20:30:39,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:30:39,559 INFO L93 Difference]: Finished difference Result 89 states and 120 transitions. [2021-05-02 20:30:39,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 20:30:39,559 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 67 [2021-05-02 20:30:39,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:30:39,560 INFO L225 Difference]: With dead ends: 89 [2021-05-02 20:30:39,561 INFO L226 Difference]: Without dead ends: 89 [2021-05-02 20:30:39,561 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 36.1ms TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:30:39,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-05-02 20:30:39,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 79. [2021-05-02 20:30:39,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 45 states have internal predecessors, (48), 28 states have call successors, (28), 9 states have call predecessors, (28), 8 states have return successors, (26), 24 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-02 20:30:39,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 102 transitions. [2021-05-02 20:30:39,568 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 102 transitions. Word has length 67 [2021-05-02 20:30:39,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:30:39,568 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 102 transitions. [2021-05-02 20:30:39,568 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-05-02 20:30:39,568 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 102 transitions. [2021-05-02 20:30:39,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-02 20:30:39,569 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:30:39,569 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:30:39,785 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:30:39,785 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:30:39,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:30:39,785 INFO L82 PathProgramCache]: Analyzing trace with hash 2004479621, now seen corresponding path program 1 times [2021-05-02 20:30:39,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:30:39,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263974339] [2021-05-02 20:30:39,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:30:39,798 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:30:39,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2056091073] [2021-05-02 20:30:39,798 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 20:30:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:30:39,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 20:30:39,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:30:39,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:39,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:39,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,091 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-05-02 20:30:40,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:30:40,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263974339] [2021-05-02 20:30:40,091 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:30:40,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056091073] [2021-05-02 20:30:40,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056091073] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:30:40,092 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:30:40,092 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 20:30:40,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611822889] [2021-05-02 20:30:40,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 20:30:40,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:30:40,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 20:30:40,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-02 20:30:40,094 INFO L87 Difference]: Start difference. First operand 79 states and 102 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 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 20:30:40,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:30:40,228 INFO L93 Difference]: Finished difference Result 116 states and 163 transitions. [2021-05-02 20:30:40,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 20:30:40,229 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 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 20:30:40,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:30:40,230 INFO L225 Difference]: With dead ends: 116 [2021-05-02 20:30:40,231 INFO L226 Difference]: Without dead ends: 116 [2021-05-02 20:30:40,231 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 62.2ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-05-02 20:30:40,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-05-02 20:30:40,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 105. [2021-05-02 20:30:40,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 55 states have (on average 1.1818181818181819) internal successors, (65), 59 states have internal predecessors, (65), 41 states have call successors, (41), 9 states have call predecessors, (41), 8 states have return successors, (39), 36 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-02 20:30:40,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 145 transitions. [2021-05-02 20:30:40,238 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 145 transitions. Word has length 69 [2021-05-02 20:30:40,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:30:40,238 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 145 transitions. [2021-05-02 20:30:40,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 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 20:30:40,238 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 145 transitions. [2021-05-02 20:30:40,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-02 20:30:40,239 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:30:40,239 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:30:40,456 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:30:40,456 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:30:40,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:30:40,457 INFO L82 PathProgramCache]: Analyzing trace with hash -966489810, now seen corresponding path program 1 times [2021-05-02 20:30:40,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:30:40,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900816397] [2021-05-02 20:30:40,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:30:40,468 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:30:40,468 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [605650715] [2021-05-02 20:30:40,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:30:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:30:40,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 20:30:40,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:30:40,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:40,739 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-05-02 20:30:40,739 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:30:40,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900816397] [2021-05-02 20:30:40,739 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:30:40,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605650715] [2021-05-02 20:30:40,739 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605650715] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:30:40,739 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:30:40,739 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 20:30:40,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226820782] [2021-05-02 20:30:40,740 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 20:30:40,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:30:40,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 20:30:40,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-05-02 20:30:40,740 INFO L87 Difference]: Start difference. First operand 105 states and 145 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2021-05-02 20:30:41,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:30:41,013 INFO L93 Difference]: Finished difference Result 148 states and 211 transitions. [2021-05-02 20:30:41,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 20:30:41,013 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 75 [2021-05-02 20:30:41,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:30:41,014 INFO L225 Difference]: With dead ends: 148 [2021-05-02 20:30:41,014 INFO L226 Difference]: Without dead ends: 147 [2021-05-02 20:30:41,015 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 94.5ms TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-05-02 20:30:41,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-05-02 20:30:41,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 144. [2021-05-02 20:30:41,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 74 states have (on average 1.2027027027027026) internal successors, (89), 81 states have internal predecessors, (89), 60 states have call successors, (60), 10 states have call predecessors, (60), 9 states have return successors, (57), 52 states have call predecessors, (57), 57 states have call successors, (57) [2021-05-02 20:30:41,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 206 transitions. [2021-05-02 20:30:41,024 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 206 transitions. Word has length 75 [2021-05-02 20:30:41,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:30:41,024 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 206 transitions. [2021-05-02 20:30:41,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2021-05-02 20:30:41,025 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 206 transitions. [2021-05-02 20:30:41,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-05-02 20:30:41,025 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:30:41,026 INFO L523 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:30:41,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-05-02 20:30:41,248 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:30:41,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:30:41,248 INFO L82 PathProgramCache]: Analyzing trace with hash -271689658, now seen corresponding path program 2 times [2021-05-02 20:30:41,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:30:41,249 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91307176] [2021-05-02 20:30:41,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:30:41,255 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:30:41,255 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1656088086] [2021-05-02 20:30:41,255 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 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 20:30:41,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 20:30:41,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:30:41,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-02 20:30:41,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:30:41,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:41,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:41,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:41,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:41,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:41,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:41,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:41,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:41,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:41,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:41,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:41,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:41,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:41,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:41,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:41,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:41,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:41,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:41,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:41,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:41,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:41,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:41,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:41,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:41,518 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-05-02 20:30:41,518 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:30:41,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91307176] [2021-05-02 20:30:41,519 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:30:41,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656088086] [2021-05-02 20:30:41,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656088086] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:30:41,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:30:41,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 20:30:41,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851487397] [2021-05-02 20:30:41,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 20:30:41,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:30:41,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 20:30:41,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:30:41,520 INFO L87 Difference]: Start difference. First operand 144 states and 206 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2021-05-02 20:30:41,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:30:41,704 INFO L93 Difference]: Finished difference Result 150 states and 211 transitions. [2021-05-02 20:30:41,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 20:30:41,705 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 80 [2021-05-02 20:30:41,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:30:41,707 INFO L225 Difference]: With dead ends: 150 [2021-05-02 20:30:41,707 INFO L226 Difference]: Without dead ends: 150 [2021-05-02 20:30:41,707 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 86.2ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-05-02 20:30:41,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-05-02 20:30:41,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2021-05-02 20:30:41,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 77 states have (on average 1.1948051948051948) internal successors, (92), 84 states have internal predecessors, (92), 60 states have call successors, (60), 11 states have call predecessors, (60), 10 states have return successors, (57), 52 states have call predecessors, (57), 57 states have call successors, (57) [2021-05-02 20:30:41,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 209 transitions. [2021-05-02 20:30:41,715 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 209 transitions. Word has length 80 [2021-05-02 20:30:41,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:30:41,715 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 209 transitions. [2021-05-02 20:30:41,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2021-05-02 20:30:41,715 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 209 transitions. [2021-05-02 20:30:41,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-05-02 20:30:41,716 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:30:41,716 INFO L523 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:30:41,932 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:30:41,933 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:30:41,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:30:41,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1540307954, now seen corresponding path program 3 times [2021-05-02 20:30:41,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:30:41,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857427629] [2021-05-02 20:30:41,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:30:41,941 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:30:41,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [47776436] [2021-05-02 20:30:41,941 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 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 20:30:42,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-02 20:30:42,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:30:42,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 46 conjunts are in the unsatisfiable core [2021-05-02 20:30:42,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:30:42,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:42,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:42,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:42,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:42,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:42,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:42,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:42,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:42,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:42,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:42,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:42,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:42,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:42,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:42,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:42,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:42,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:42,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:42,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:42,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:42,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:42,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:42,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:42,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:42,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:42,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:42,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:42,649 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-05-02 20:30:42,649 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:30:42,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857427629] [2021-05-02 20:30:42,650 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:30:42,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47776436] [2021-05-02 20:30:42,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47776436] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:30:42,650 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:30:42,650 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-05-02 20:30:42,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964984380] [2021-05-02 20:30:42,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 20:30:42,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:30:42,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 20:30:42,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-05-02 20:30:42,651 INFO L87 Difference]: Start difference. First operand 148 states and 209 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2021-05-02 20:30:43,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:30:43,146 INFO L93 Difference]: Finished difference Result 154 states and 214 transitions. [2021-05-02 20:30:43,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 20:30:43,146 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 85 [2021-05-02 20:30:43,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:30:43,148 INFO L225 Difference]: With dead ends: 154 [2021-05-02 20:30:43,148 INFO L226 Difference]: Without dead ends: 154 [2021-05-02 20:30:43,148 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 370.9ms TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-05-02 20:30:43,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-05-02 20:30:43,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2021-05-02 20:30:43,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 80 states have (on average 1.1875) internal successors, (95), 87 states have internal predecessors, (95), 60 states have call successors, (60), 12 states have call predecessors, (60), 11 states have return successors, (57), 52 states have call predecessors, (57), 57 states have call successors, (57) [2021-05-02 20:30:43,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 212 transitions. [2021-05-02 20:30:43,155 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 212 transitions. Word has length 85 [2021-05-02 20:30:43,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:30:43,156 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 212 transitions. [2021-05-02 20:30:43,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2021-05-02 20:30:43,156 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 212 transitions. [2021-05-02 20:30:43,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-02 20:30:43,156 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:30:43,156 INFO L523 BasicCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:30:43,377 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:30:43,377 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:30:43,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:30:43,378 INFO L82 PathProgramCache]: Analyzing trace with hash 583225195, now seen corresponding path program 2 times [2021-05-02 20:30:43,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:30:43,378 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103116132] [2021-05-02 20:30:43,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:30:43,385 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:30:43,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [434977395] [2021-05-02 20:30:43,385 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 20:30:43,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 20:30:43,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:30:43,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-02 20:30:43,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:30:43,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:43,615 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 27 proven. 35 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-05-02 20:30:43,615 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:30:43,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103116132] [2021-05-02 20:30:43,615 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:30:43,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434977395] [2021-05-02 20:30:43,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434977395] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:30:43,615 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:30:43,615 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 20:30:43,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018895436] [2021-05-02 20:30:43,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 20:30:43,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:30:43,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 20:30:43,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-05-02 20:30:43,617 INFO L87 Difference]: Start difference. First operand 152 states and 212 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-05-02 20:30:43,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:30:43,865 INFO L93 Difference]: Finished difference Result 213 states and 317 transitions. [2021-05-02 20:30:43,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 20:30:43,866 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 89 [2021-05-02 20:30:43,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:30:43,867 INFO L225 Difference]: With dead ends: 213 [2021-05-02 20:30:43,867 INFO L226 Difference]: Without dead ends: 213 [2021-05-02 20:30:43,867 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 78.8ms TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-05-02 20:30:43,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-05-02 20:30:43,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 186. [2021-05-02 20:30:43,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 93 states have (on average 1.2150537634408602) internal successors, (113), 100 states have internal predecessors, (113), 80 states have call successors, (80), 13 states have call predecessors, (80), 12 states have return successors, (77), 72 states have call predecessors, (77), 77 states have call successors, (77) [2021-05-02 20:30:43,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 270 transitions. [2021-05-02 20:30:43,874 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 270 transitions. Word has length 89 [2021-05-02 20:30:43,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:30:43,874 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 270 transitions. [2021-05-02 20:30:43,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-05-02 20:30:43,874 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 270 transitions. [2021-05-02 20:30:43,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-05-02 20:30:43,875 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:30:43,875 INFO L523 BasicCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:30:44,091 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-05-02 20:30:44,091 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:30:44,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:30:44,091 INFO L82 PathProgramCache]: Analyzing trace with hash -757951041, now seen corresponding path program 1 times [2021-05-02 20:30:44,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:30:44,092 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340665088] [2021-05-02 20:30:44,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:30:44,097 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:30:44,098 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [869103814] [2021-05-02 20:30:44,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:30:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:30:44,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 57 conjunts are in the unsatisfiable core [2021-05-02 20:30:44,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:30:44,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:44,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:44,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:44,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:44,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:44,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:44,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:44,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:44,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:44,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:44,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:44,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:44,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:44,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:44,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:44,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:44,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:44,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:44,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:44,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:44,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:44,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:44,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:44,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:44,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:44,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:44,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:44,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:44,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:44,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:44,588 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 30 proven. 39 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-05-02 20:30:44,588 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:30:44,588 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340665088] [2021-05-02 20:30:44,589 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:30:44,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869103814] [2021-05-02 20:30:44,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869103814] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:30:44,589 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:30:44,589 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-05-02 20:30:44,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088243517] [2021-05-02 20:30:44,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-02 20:30:44,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:30:44,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-02 20:30:44,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-05-02 20:30:44,590 INFO L87 Difference]: Start difference. First operand 186 states and 270 transitions. Second operand has 17 states, 16 states have (on average 1.8125) internal successors, (29), 14 states have internal predecessors, (29), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) [2021-05-02 20:30:45,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:30:45,041 INFO L93 Difference]: Finished difference Result 219 states and 318 transitions. [2021-05-02 20:30:45,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-02 20:30:45,042 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.8125) internal successors, (29), 14 states have internal predecessors, (29), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) Word has length 91 [2021-05-02 20:30:45,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:30:45,043 INFO L225 Difference]: With dead ends: 219 [2021-05-02 20:30:45,043 INFO L226 Difference]: Without dead ends: 218 [2021-05-02 20:30:45,044 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 313.4ms TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2021-05-02 20:30:45,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-05-02 20:30:45,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 217. [2021-05-02 20:30:45,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 117 states have internal predecessors, (132), 93 states have call successors, (93), 15 states have call predecessors, (93), 14 states have return successors, (90), 84 states have call predecessors, (90), 90 states have call successors, (90) [2021-05-02 20:30:45,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 315 transitions. [2021-05-02 20:30:45,053 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 315 transitions. Word has length 91 [2021-05-02 20:30:45,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:30:45,053 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 315 transitions. [2021-05-02 20:30:45,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 1.8125) internal successors, (29), 14 states have internal predecessors, (29), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) [2021-05-02 20:30:45,054 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 315 transitions. [2021-05-02 20:30:45,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-05-02 20:30:45,054 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:30:45,055 INFO L523 BasicCegarLoop]: trace histogram [10, 9, 9, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:30:45,278 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-02 20:30:45,279 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:30:45,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:30:45,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1735983139, now seen corresponding path program 4 times [2021-05-02 20:30:45,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:30:45,279 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326734100] [2021-05-02 20:30:45,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:30:45,287 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:30:45,287 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [755303081] [2021-05-02 20:30:45,287 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 20:30:45,344 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 20:30:45,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:30:45,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 20:30:45,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:30:45,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:45,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:45,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:45,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:45,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:45,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:45,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:45,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:45,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:45,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:45,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:45,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:45,490 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-05-02 20:30:45,490 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:30:45,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326734100] [2021-05-02 20:30:45,490 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:30:45,491 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755303081] [2021-05-02 20:30:45,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755303081] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:30:45,491 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:30:45,491 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 20:30:45,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394360966] [2021-05-02 20:30:45,491 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 20:30:45,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:30:45,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 20:30:45,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-02 20:30:45,492 INFO L87 Difference]: Start difference. First operand 217 states and 315 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-05-02 20:30:45,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:30:45,549 INFO L93 Difference]: Finished difference Result 194 states and 271 transitions. [2021-05-02 20:30:45,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 20:30:45,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 100 [2021-05-02 20:30:45,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:30:45,551 INFO L225 Difference]: With dead ends: 194 [2021-05-02 20:30:45,551 INFO L226 Difference]: Without dead ends: 194 [2021-05-02 20:30:45,552 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.0ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-05-02 20:30:45,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-05-02 20:30:45,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 185. [2021-05-02 20:30:45,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 94 states have (on average 1.148936170212766) internal successors, (108), 101 states have internal predecessors, (108), 76 states have call successors, (76), 15 states have call predecessors, (76), 14 states have return successors, (73), 68 states have call predecessors, (73), 73 states have call successors, (73) [2021-05-02 20:30:45,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 257 transitions. [2021-05-02 20:30:45,559 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 257 transitions. Word has length 100 [2021-05-02 20:30:45,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:30:45,559 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 257 transitions. [2021-05-02 20:30:45,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-05-02 20:30:45,559 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 257 transitions. [2021-05-02 20:30:45,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-05-02 20:30:45,560 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:30:45,560 INFO L523 BasicCegarLoop]: trace histogram [12, 11, 11, 6, 6, 6, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:30:45,782 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-02 20:30:45,783 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:30:45,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:30:45,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1708635976, now seen corresponding path program 1 times [2021-05-02 20:30:45,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:30:45,783 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932876723] [2021-05-02 20:30:45,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:30:45,790 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:30:45,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1147711978] [2021-05-02 20:30:45,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 20:30:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:30:45,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-02 20:30:45,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:30:45,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:45,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:45,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:45,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:45,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:45,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:45,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:45,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:46,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:46,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:46,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:46,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:46,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:46,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:46,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:46,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:46,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:46,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:46,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:46,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:46,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:46,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:46,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:46,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:46,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:46,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:46,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:46,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:46,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:46,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:46,430 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 87 proven. 52 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2021-05-02 20:30:46,430 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:30:46,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932876723] [2021-05-02 20:30:46,430 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:30:46,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147711978] [2021-05-02 20:30:46,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147711978] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:30:46,430 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:30:46,430 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-05-02 20:30:46,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295984063] [2021-05-02 20:30:46,431 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 20:30:46,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:30:46,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 20:30:46,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-05-02 20:30:46,432 INFO L87 Difference]: Start difference. First operand 185 states and 257 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 12 states have internal predecessors, (30), 7 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 6 states have call predecessors, (18), 7 states have call successors, (18) [2021-05-02 20:30:52,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:30:52,907 INFO L93 Difference]: Finished difference Result 190 states and 261 transitions. [2021-05-02 20:30:52,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 20:30:52,908 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 12 states have internal predecessors, (30), 7 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 6 states have call predecessors, (18), 7 states have call successors, (18) Word has length 107 [2021-05-02 20:30:52,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:30:52,909 INFO L225 Difference]: With dead ends: 190 [2021-05-02 20:30:52,909 INFO L226 Difference]: Without dead ends: 190 [2021-05-02 20:30:52,909 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 90 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 395.5ms TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2021-05-02 20:30:52,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-05-02 20:30:52,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 158. [2021-05-02 20:30:52,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 81 states have (on average 1.1481481481481481) internal successors, (93), 87 states have internal predecessors, (93), 63 states have call successors, (63), 14 states have call predecessors, (63), 13 states have return successors, (60), 56 states have call predecessors, (60), 60 states have call successors, (60) [2021-05-02 20:30:52,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 216 transitions. [2021-05-02 20:30:52,916 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 216 transitions. Word has length 107 [2021-05-02 20:30:52,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:30:52,916 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 216 transitions. [2021-05-02 20:30:52,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 12 states have internal predecessors, (30), 7 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 6 states have call predecessors, (18), 7 states have call successors, (18) [2021-05-02 20:30:52,917 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 216 transitions. [2021-05-02 20:30:52,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-05-02 20:30:52,917 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:30:52,918 INFO L523 BasicCegarLoop]: trace histogram [13, 12, 12, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2021-05-02 20:30:53,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:30:53,118 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:30:53,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:30:53,119 INFO L82 PathProgramCache]: Analyzing trace with hash 82449829, now seen corresponding path program 3 times [2021-05-02 20:30:53,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:30:53,119 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44546429] [2021-05-02 20:30:53,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:30:53,124 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:30:53,124 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126756125] [2021-05-02 20:30:53,124 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 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 20:30:53,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-02 20:30:53,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:30:53,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 20:30:53,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:30:53,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:53,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:53,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:53,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:53,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:53,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:53,573 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 87 proven. 11 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2021-05-02 20:30:53,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:30:53,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44546429] [2021-05-02 20:30:53,573 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:30:53,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126756125] [2021-05-02 20:30:53,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126756125] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:30:53,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:30:53,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-02 20:30:53,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445929055] [2021-05-02 20:30:53,573 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 20:30:53,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:30:53,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 20:30:53,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-02 20:30:53,574 INFO L87 Difference]: Start difference. First operand 158 states and 216 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-05-02 20:30:53,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:30:53,637 INFO L93 Difference]: Finished difference Result 162 states and 219 transitions. [2021-05-02 20:30:53,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 20:30:53,637 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 111 [2021-05-02 20:30:53,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:30:53,638 INFO L225 Difference]: With dead ends: 162 [2021-05-02 20:30:53,638 INFO L226 Difference]: Without dead ends: 162 [2021-05-02 20:30:53,639 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 196.4ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-02 20:30:53,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-05-02 20:30:53,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 138. [2021-05-02 20:30:53,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 74 states have (on average 1.1216216216216217) internal successors, (83), 79 states have internal predecessors, (83), 50 states have call successors, (50), 14 states have call predecessors, (50), 13 states have return successors, (47), 44 states have call predecessors, (47), 47 states have call successors, (47) [2021-05-02 20:30:53,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 180 transitions. [2021-05-02 20:30:53,643 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 180 transitions. Word has length 111 [2021-05-02 20:30:53,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:30:53,643 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 180 transitions. [2021-05-02 20:30:53,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-05-02 20:30:53,643 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 180 transitions. [2021-05-02 20:30:53,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-02 20:30:53,644 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:30:53,644 INFO L523 BasicCegarLoop]: trace histogram [13, 12, 12, 6, 6, 6, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:30:53,861 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-02 20:30:53,861 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:30:53,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:30:53,862 INFO L82 PathProgramCache]: Analyzing trace with hash -966740615, now seen corresponding path program 2 times [2021-05-02 20:30:53,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:30:53,862 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076445358] [2021-05-02 20:30:53,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:30:53,868 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:30:53,868 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1483655240] [2021-05-02 20:30:53,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:30:53,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 20:30:53,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:30:53,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 63 conjunts are in the unsatisfiable core [2021-05-02 20:30:53,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:30:53,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:53,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:53,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:53,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:53,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:53,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:54,457 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 75 proven. 65 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2021-05-02 20:30:54,457 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:30:54,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076445358] [2021-05-02 20:30:54,457 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:30:54,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483655240] [2021-05-02 20:30:54,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483655240] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:30:54,457 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:30:54,457 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-05-02 20:30:54,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484776847] [2021-05-02 20:30:54,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-02 20:30:54,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:30:54,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-02 20:30:54,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-05-02 20:30:54,458 INFO L87 Difference]: Start difference. First operand 138 states and 180 transitions. Second operand has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 14 states have internal predecessors, (31), 9 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 7 states have call predecessors, (19), 8 states have call successors, (19) [2021-05-02 20:30:56,194 WARN L205 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2021-05-02 20:30:56,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:30:56,342 INFO L93 Difference]: Finished difference Result 172 states and 228 transitions. [2021-05-02 20:30:56,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 20:30:56,342 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 14 states have internal predecessors, (31), 9 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 7 states have call predecessors, (19), 8 states have call successors, (19) Word has length 113 [2021-05-02 20:30:56,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:30:56,344 INFO L225 Difference]: With dead ends: 172 [2021-05-02 20:30:56,344 INFO L226 Difference]: Without dead ends: 171 [2021-05-02 20:30:56,344 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1661.0ms TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2021-05-02 20:30:56,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-05-02 20:30:56,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2021-05-02 20:30:56,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 90 states have (on average 1.1222222222222222) internal successors, (101), 96 states have internal predecessors, (101), 63 states have call successors, (63), 16 states have call predecessors, (63), 15 states have return successors, (60), 56 states have call predecessors, (60), 60 states have call successors, (60) [2021-05-02 20:30:56,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 224 transitions. [2021-05-02 20:30:56,348 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 224 transitions. Word has length 113 [2021-05-02 20:30:56,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:30:56,348 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 224 transitions. [2021-05-02 20:30:56,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 14 states have internal predecessors, (31), 9 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 7 states have call predecessors, (19), 8 states have call successors, (19) [2021-05-02 20:30:56,348 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 224 transitions. [2021-05-02 20:30:56,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-05-02 20:30:56,350 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:30:56,350 INFO L523 BasicCegarLoop]: trace histogram [13, 12, 12, 6, 6, 6, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:30:56,560 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-02 20:30:56,561 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:30:56,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:30:56,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1855467922, now seen corresponding path program 3 times [2021-05-02 20:30:56,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:30:56,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764309913] [2021-05-02 20:30:56,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:30:56,572 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:30:56,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1842176997] [2021-05-02 20:30:56,572 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 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 20:30:56,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-02 20:30:56,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:30:56,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 20:30:56,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:30:56,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:56,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:56,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:56,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:56,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:56,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:56,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:56,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:56,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:56,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:56,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:56,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:56,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:56,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:56,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:56,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:56,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:56,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:56,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:56,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:56,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:56,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:56,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:56,802 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-05-02 20:30:56,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:30:56,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764309913] [2021-05-02 20:30:56,802 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:30:56,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842176997] [2021-05-02 20:30:56,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842176997] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:30:56,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:30:56,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-02 20:30:56,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578284333] [2021-05-02 20:30:56,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 20:30:56,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:30:56,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 20:30:56,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-02 20:30:56,806 INFO L87 Difference]: Start difference. First operand 169 states and 224 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 4 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-05-02 20:30:56,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:30:56,984 INFO L93 Difference]: Finished difference Result 207 states and 292 transitions. [2021-05-02 20:30:56,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 20:30:56,985 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 4 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 116 [2021-05-02 20:30:56,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:30:56,986 INFO L225 Difference]: With dead ends: 207 [2021-05-02 20:30:56,986 INFO L226 Difference]: Without dead ends: 207 [2021-05-02 20:30:56,986 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 83.2ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-05-02 20:30:56,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-05-02 20:30:56,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 188. [2021-05-02 20:30:56,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 97 states have (on average 1.1546391752577319) internal successors, (112), 99 states have internal predecessors, (112), 75 states have call successors, (75), 16 states have call predecessors, (75), 15 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2021-05-02 20:30:56,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 259 transitions. [2021-05-02 20:30:56,992 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 259 transitions. Word has length 116 [2021-05-02 20:30:56,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:30:56,992 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 259 transitions. [2021-05-02 20:30:56,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 4 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-05-02 20:30:56,992 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 259 transitions. [2021-05-02 20:30:56,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-05-02 20:30:56,994 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:30:56,994 INFO L523 BasicCegarLoop]: trace histogram [14, 13, 13, 6, 6, 6, 4, 4, 4, 4, 3, 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, 1, 1, 1] [2021-05-02 20:30:57,209 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-02 20:30:57,210 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:30:57,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:30:57,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1380247977, now seen corresponding path program 2 times [2021-05-02 20:30:57,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:30:57,211 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556452578] [2021-05-02 20:30:57,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:30:57,216 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:30:57,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [454830494] [2021-05-02 20:30:57,216 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 20:30:57,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 20:30:57,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:30:57,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 20:30:57,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:30:57,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:57,759 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 49 proven. 62 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2021-05-02 20:30:57,760 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:30:57,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556452578] [2021-05-02 20:30:57,760 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:30:57,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454830494] [2021-05-02 20:30:57,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454830494] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:30:57,760 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:30:57,760 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-05-02 20:30:57,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075082001] [2021-05-02 20:30:57,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-02 20:30:57,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:30:57,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-02 20:30:57,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-05-02 20:30:57,762 INFO L87 Difference]: Start difference. First operand 188 states and 259 transitions. Second operand has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 15 states have internal predecessors, (35), 8 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2021-05-02 20:30:59,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:30:59,643 INFO L93 Difference]: Finished difference Result 265 states and 378 transitions. [2021-05-02 20:30:59,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 20:30:59,644 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 15 states have internal predecessors, (35), 8 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) Word has length 122 [2021-05-02 20:30:59,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:30:59,645 INFO L225 Difference]: With dead ends: 265 [2021-05-02 20:30:59,645 INFO L226 Difference]: Without dead ends: 265 [2021-05-02 20:30:59,645 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 1012.3ms TimeCoverageRelationStatistics Valid=301, Invalid=1505, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 20:30:59,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-05-02 20:30:59,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 259. [2021-05-02 20:30:59,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 130 states have (on average 1.1692307692307693) internal successors, (152), 132 states have internal predecessors, (152), 111 states have call successors, (111), 18 states have call predecessors, (111), 17 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2021-05-02 20:30:59,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 371 transitions. [2021-05-02 20:30:59,651 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 371 transitions. Word has length 122 [2021-05-02 20:30:59,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:30:59,652 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 371 transitions. [2021-05-02 20:30:59,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 15 states have internal predecessors, (35), 8 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2021-05-02 20:30:59,652 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 371 transitions. [2021-05-02 20:30:59,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-05-02 20:30:59,652 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:30:59,652 INFO L523 BasicCegarLoop]: trace histogram [15, 14, 14, 6, 6, 6, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1] [2021-05-02 20:30:59,868 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:30:59,869 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:30:59,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:30:59,869 INFO L82 PathProgramCache]: Analyzing trace with hash 259955901, now seen corresponding path program 3 times [2021-05-02 20:30:59,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:30:59,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74853886] [2021-05-02 20:30:59,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:30:59,876 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:30:59,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [342966376] [2021-05-02 20:30:59,877 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 20:30:59,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-02 20:30:59,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:30:59,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 70 conjunts are in the unsatisfiable core [2021-05-02 20:30:59,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:30:59,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:30:59,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:00,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:00,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:00,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:00,311 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 78 proven. 41 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-05-02 20:31:00,312 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:31:00,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74853886] [2021-05-02 20:31:00,312 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:31:00,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342966376] [2021-05-02 20:31:00,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342966376] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:31:00,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:31:00,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-05-02 20:31:00,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969693259] [2021-05-02 20:31:00,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 20:31:00,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:31:00,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 20:31:00,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-05-02 20:31:00,314 INFO L87 Difference]: Start difference. First operand 259 states and 371 transitions. Second operand has 15 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 7 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 6 states have call successors, (21) [2021-05-02 20:31:00,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:31:00,879 INFO L93 Difference]: Finished difference Result 299 states and 421 transitions. [2021-05-02 20:31:00,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 20:31:00,879 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 7 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 6 states have call successors, (21) Word has length 127 [2021-05-02 20:31:00,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:31:00,881 INFO L225 Difference]: With dead ends: 299 [2021-05-02 20:31:00,881 INFO L226 Difference]: Without dead ends: 299 [2021-05-02 20:31:00,881 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 254.5ms TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-05-02 20:31:00,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-05-02 20:31:00,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 296. [2021-05-02 20:31:00,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 151 states have (on average 1.1589403973509933) internal successors, (175), 153 states have internal predecessors, (175), 123 states have call successors, (123), 22 states have call predecessors, (123), 21 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2021-05-02 20:31:00,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 418 transitions. [2021-05-02 20:31:00,888 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 418 transitions. Word has length 127 [2021-05-02 20:31:00,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:31:00,888 INFO L480 AbstractCegarLoop]: Abstraction has 296 states and 418 transitions. [2021-05-02 20:31:00,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 7 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 6 states have call successors, (21) [2021-05-02 20:31:00,888 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 418 transitions. [2021-05-02 20:31:00,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-05-02 20:31:00,889 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:31:00,889 INFO L523 BasicCegarLoop]: trace histogram [16, 15, 15, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:31:01,104 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:31:01,104 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:31:01,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:31:01,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1431100670, now seen corresponding path program 4 times [2021-05-02 20:31:01,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:31:01,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803283535] [2021-05-02 20:31:01,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:31:01,110 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:31:01,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1474818390] [2021-05-02 20:31:01,110 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 20:31:01,164 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 20:31:01,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:31:01,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 82 conjunts are in the unsatisfiable core [2021-05-02 20:31:01,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:31:01,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:01,877 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 117 proven. 125 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2021-05-02 20:31:01,877 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:31:01,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803283535] [2021-05-02 20:31:01,877 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:31:01,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474818390] [2021-05-02 20:31:01,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474818390] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:31:01,877 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:31:01,877 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-05-02 20:31:01,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094069173] [2021-05-02 20:31:01,878 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-02 20:31:01,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:31:01,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-02 20:31:01,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-05-02 20:31:01,879 INFO L87 Difference]: Start difference. First operand 296 states and 418 transitions. Second operand has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 13 states have internal predecessors, (32), 9 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 7 states have call predecessors, (22), 9 states have call successors, (22) [2021-05-02 20:31:06,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:31:06,603 INFO L93 Difference]: Finished difference Result 302 states and 423 transitions. [2021-05-02 20:31:06,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-02 20:31:06,604 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 13 states have internal predecessors, (32), 9 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 7 states have call predecessors, (22), 9 states have call successors, (22) Word has length 129 [2021-05-02 20:31:06,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:31:06,605 INFO L225 Difference]: With dead ends: 302 [2021-05-02 20:31:06,605 INFO L226 Difference]: Without dead ends: 302 [2021-05-02 20:31:06,606 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 109 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 510.6ms TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2021-05-02 20:31:06,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-05-02 20:31:06,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 300. [2021-05-02 20:31:06,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 154 states have (on average 1.155844155844156) internal successors, (178), 156 states have internal predecessors, (178), 123 states have call successors, (123), 23 states have call predecessors, (123), 22 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2021-05-02 20:31:06,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 421 transitions. [2021-05-02 20:31:06,612 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 421 transitions. Word has length 129 [2021-05-02 20:31:06,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:31:06,612 INFO L480 AbstractCegarLoop]: Abstraction has 300 states and 421 transitions. [2021-05-02 20:31:06,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 13 states have internal predecessors, (32), 9 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 7 states have call predecessors, (22), 9 states have call successors, (22) [2021-05-02 20:31:06,612 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 421 transitions. [2021-05-02 20:31:06,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-05-02 20:31:06,613 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:31:06,613 INFO L523 BasicCegarLoop]: trace histogram [16, 15, 15, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1] [2021-05-02 20:31:06,830 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-05-02 20:31:06,830 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:31:06,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:31:06,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1491357193, now seen corresponding path program 5 times [2021-05-02 20:31:06,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:31:06,831 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031638986] [2021-05-02 20:31:06,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:31:06,848 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:31:06,848 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1704484210] [2021-05-02 20:31:06,848 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 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 20:31:06,943 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-05-02 20:31:06,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:31:06,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 91 conjunts are in the unsatisfiable core [2021-05-02 20:31:06,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:31:07,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:07,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 97 proven. 147 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-05-02 20:31:08,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:31:08,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031638986] [2021-05-02 20:31:08,011 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:31:08,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704484210] [2021-05-02 20:31:08,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704484210] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:31:08,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:31:08,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-05-02 20:31:08,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518699668] [2021-05-02 20:31:08,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-02 20:31:08,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:31:08,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-02 20:31:08,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2021-05-02 20:31:08,012 INFO L87 Difference]: Start difference. First operand 300 states and 421 transitions. Second operand has 20 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 15 states have internal predecessors, (35), 10 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 10 states have call predecessors, (22), 9 states have call successors, (22) [2021-05-02 20:31:09,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:31:09,127 INFO L93 Difference]: Finished difference Result 321 states and 438 transitions. [2021-05-02 20:31:09,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 20:31:09,129 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 15 states have internal predecessors, (35), 10 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 10 states have call predecessors, (22), 9 states have call successors, (22) Word has length 132 [2021-05-02 20:31:09,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:31:09,130 INFO L225 Difference]: With dead ends: 321 [2021-05-02 20:31:09,130 INFO L226 Difference]: Without dead ends: 321 [2021-05-02 20:31:09,130 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 110 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1032.4ms TimeCoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2021-05-02 20:31:09,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-05-02 20:31:09,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 316. [2021-05-02 20:31:09,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 166 states have (on average 1.144578313253012) internal successors, (190), 168 states have internal predecessors, (190), 123 states have call successors, (123), 27 states have call predecessors, (123), 26 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2021-05-02 20:31:09,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 433 transitions. [2021-05-02 20:31:09,140 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 433 transitions. Word has length 132 [2021-05-02 20:31:09,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:31:09,141 INFO L480 AbstractCegarLoop]: Abstraction has 316 states and 433 transitions. [2021-05-02 20:31:09,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 15 states have internal predecessors, (35), 10 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 10 states have call predecessors, (22), 9 states have call successors, (22) [2021-05-02 20:31:09,141 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 433 transitions. [2021-05-02 20:31:09,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-05-02 20:31:09,142 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:31:09,142 INFO L523 BasicCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:31:09,358 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-05-02 20:31:09,358 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:31:09,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:31:09,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1694952883, now seen corresponding path program 4 times [2021-05-02 20:31:09,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:31:09,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187445491] [2021-05-02 20:31:09,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:31:09,367 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:31:09,367 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [436340996] [2021-05-02 20:31:09,367 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:31:09,422 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 20:31:09,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:31:09,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 56 conjunts are in the unsatisfiable core [2021-05-02 20:31:09,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:31:09,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:09,932 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 35 proven. 59 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2021-05-02 20:31:09,932 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:31:09,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187445491] [2021-05-02 20:31:09,932 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:31:09,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436340996] [2021-05-02 20:31:09,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436340996] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:31:09,932 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:31:09,932 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-05-02 20:31:09,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810104323] [2021-05-02 20:31:09,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 20:31:09,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:31:09,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 20:31:09,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-05-02 20:31:09,935 INFO L87 Difference]: Start difference. First operand 316 states and 433 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 8 states have call predecessors, (23), 8 states have call successors, (23) [2021-05-02 20:31:10,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:31:10,554 INFO L93 Difference]: Finished difference Result 334 states and 454 transitions. [2021-05-02 20:31:10,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 20:31:10,555 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 8 states have call predecessors, (23), 8 states have call successors, (23) Word has length 135 [2021-05-02 20:31:10,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:31:10,556 INFO L225 Difference]: With dead ends: 334 [2021-05-02 20:31:10,556 INFO L226 Difference]: Without dead ends: 326 [2021-05-02 20:31:10,556 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 412.1ms TimeCoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2021-05-02 20:31:10,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-05-02 20:31:10,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-05-02 20:31:10,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 171 states have (on average 1.1403508771929824) internal successors, (195), 173 states have internal predecessors, (195), 127 states have call successors, (127), 28 states have call predecessors, (127), 27 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124) [2021-05-02 20:31:10,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 446 transitions. [2021-05-02 20:31:10,563 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 446 transitions. Word has length 135 [2021-05-02 20:31:10,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:31:10,563 INFO L480 AbstractCegarLoop]: Abstraction has 326 states and 446 transitions. [2021-05-02 20:31:10,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 8 states have call predecessors, (23), 8 states have call successors, (23) [2021-05-02 20:31:10,563 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 446 transitions. [2021-05-02 20:31:10,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-05-02 20:31:10,564 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:31:10,564 INFO L523 BasicCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1] [2021-05-02 20:31:10,779 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:31:10,779 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:31:10,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:31:10,779 INFO L82 PathProgramCache]: Analyzing trace with hash -928796440, now seen corresponding path program 5 times [2021-05-02 20:31:10,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:31:10,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422836836] [2021-05-02 20:31:10,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:31:10,791 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:31:10,791 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [146093454] [2021-05-02 20:31:10,791 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:31:10,928 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-05-02 20:31:10,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:31:10,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 96 conjunts are in the unsatisfiable core [2021-05-02 20:31:10,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:31:10,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:10,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:10,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:10,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:11,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:11,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:11,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:11,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:11,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:11,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:11,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:11,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:11,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:11,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:11,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:11,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:11,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:11,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:11,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:11,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:11,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:11,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:11,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:11,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:11,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:11,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:11,676 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 99 proven. 156 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2021-05-02 20:31:11,676 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:31:11,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422836836] [2021-05-02 20:31:11,677 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:31:11,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146093454] [2021-05-02 20:31:11,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146093454] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:31:11,677 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:31:11,677 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-05-02 20:31:11,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563292375] [2021-05-02 20:31:11,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-02 20:31:11,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:31:11,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-02 20:31:11,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2021-05-02 20:31:11,678 INFO L87 Difference]: Start difference. First operand 326 states and 446 transitions. Second operand has 21 states, 20 states have (on average 1.8) internal successors, (36), 17 states have internal predecessors, (36), 9 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 9 states have call predecessors, (23), 8 states have call successors, (23) [2021-05-02 20:31:12,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:31:12,601 INFO L93 Difference]: Finished difference Result 378 states and 514 transitions. [2021-05-02 20:31:12,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 20:31:12,602 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.8) internal successors, (36), 17 states have internal predecessors, (36), 9 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 9 states have call predecessors, (23), 8 states have call successors, (23) Word has length 138 [2021-05-02 20:31:12,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:31:12,603 INFO L225 Difference]: With dead ends: 378 [2021-05-02 20:31:12,604 INFO L226 Difference]: Without dead ends: 378 [2021-05-02 20:31:12,604 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 116 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 668.8ms TimeCoverageRelationStatistics Valid=96, Invalid=660, Unknown=0, NotChecked=0, Total=756 [2021-05-02 20:31:12,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-05-02 20:31:12,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 345. [2021-05-02 20:31:12,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 182 states have (on average 1.1428571428571428) internal successors, (208), 185 states have internal predecessors, (208), 132 states have call successors, (132), 31 states have call predecessors, (132), 30 states have return successors, (129), 128 states have call predecessors, (129), 129 states have call successors, (129) [2021-05-02 20:31:12,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 469 transitions. [2021-05-02 20:31:12,611 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 469 transitions. Word has length 138 [2021-05-02 20:31:12,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:31:12,612 INFO L480 AbstractCegarLoop]: Abstraction has 345 states and 469 transitions. [2021-05-02 20:31:12,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 1.8) internal successors, (36), 17 states have internal predecessors, (36), 9 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 9 states have call predecessors, (23), 8 states have call successors, (23) [2021-05-02 20:31:12,612 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 469 transitions. [2021-05-02 20:31:12,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 20:31:12,612 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:31:12,613 INFO L523 BasicCegarLoop]: trace histogram [18, 17, 17, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2021-05-02 20:31:12,813 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-02 20:31:12,813 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:31:12,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:31:12,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1199073726, now seen corresponding path program 1 times [2021-05-02 20:31:12,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:31:12,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109873045] [2021-05-02 20:31:12,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:31:12,825 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:31:12,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [179842013] [2021-05-02 20:31:12,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:31:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:31:12,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 69 conjunts are in the unsatisfiable core [2021-05-02 20:31:12,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:31:12,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:12,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:12,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:12,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:12,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:12,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:13,527 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 59 proven. 123 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2021-05-02 20:31:13,527 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:31:13,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109873045] [2021-05-02 20:31:13,527 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:31:13,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179842013] [2021-05-02 20:31:13,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179842013] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:31:13,527 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:31:13,527 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-05-02 20:31:13,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723756120] [2021-05-02 20:31:13,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 20:31:13,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:31:13,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 20:31:13,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-05-02 20:31:13,529 INFO L87 Difference]: Start difference. First operand 345 states and 469 transitions. Second operand has 19 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 8 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2021-05-02 20:31:14,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:31:14,359 INFO L93 Difference]: Finished difference Result 353 states and 476 transitions. [2021-05-02 20:31:14,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 20:31:14,359 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 8 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) Word has length 143 [2021-05-02 20:31:14,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:31:14,361 INFO L225 Difference]: With dead ends: 353 [2021-05-02 20:31:14,361 INFO L226 Difference]: Without dead ends: 351 [2021-05-02 20:31:14,361 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 581.9ms TimeCoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2021-05-02 20:31:14,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-05-02 20:31:14,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 348. [2021-05-02 20:31:14,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 185 states have (on average 1.135135135135135) internal successors, (210), 187 states have internal predecessors, (210), 131 states have call successors, (131), 32 states have call predecessors, (131), 31 states have return successors, (128), 128 states have call predecessors, (128), 128 states have call successors, (128) [2021-05-02 20:31:14,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 469 transitions. [2021-05-02 20:31:14,370 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 469 transitions. Word has length 143 [2021-05-02 20:31:14,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:31:14,370 INFO L480 AbstractCegarLoop]: Abstraction has 348 states and 469 transitions. [2021-05-02 20:31:14,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 8 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2021-05-02 20:31:14,370 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 469 transitions. [2021-05-02 20:31:14,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-05-02 20:31:14,371 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:31:14,371 INFO L523 BasicCegarLoop]: trace histogram [18, 17, 17, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 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] [2021-05-02 20:31:14,587 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-02 20:31:14,587 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:31:14,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:31:14,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1825079459, now seen corresponding path program 6 times [2021-05-02 20:31:14,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:31:14,588 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378669716] [2021-05-02 20:31:14,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:31:14,593 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:31:14,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [494378336] [2021-05-02 20:31:14,593 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:31:14,731 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-05-02 20:31:14,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:31:14,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 80 conjunts are in the unsatisfiable core [2021-05-02 20:31:14,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:31:14,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:14,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:14,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:14,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:14,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:14,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:14,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:14,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:14,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:14,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:14,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:14,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:14,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:14,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:14,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:14,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:14,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:14,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:14,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:14,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:14,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:14,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:14,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:14,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:14,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:14,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:15,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:15,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:15,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:15,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:15,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:15,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:15,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:15,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:15,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:15,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:15,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:15,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:15,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:15,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:15,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:15,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:25,716 WARN L205 SmtUtils]: Spent 8.33 s on a formula simplification that was a NOOP. DAG size: 29 [2021-05-02 20:31:49,460 WARN L205 SmtUtils]: Spent 16.36 s on a formula simplification that was a NOOP. DAG size: 30 [2021-05-02 20:31:51,498 WARN L838 $PredicateComparison]: unable to prove that (and (= (+ (* c_main_~x~0 c_main_~y~0 c_main_~p~0) (* c_main_~y~0 c_main_~y~0 c_main_~r~0) c_main_~a~0) (+ (* c_main_~y~0 c_main_~r~0) (* c_main_~y~0 c_main_~a~0) (* c_main_~x~0 c_main_~p~0))) (< c_main_~y~0 (* 2 c_main_~a~0)) (< c_main_~a~0 c_main_~y~0) (< (* c_main_~x~0 c_main_~y~0) 2147483647) (<= c_main_~x~0 5) (<= 0 c_main_~x~0) (= c_main_~p~0 1)) is different from false [2021-05-02 20:31:51,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:51,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:53,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:53,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:53,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:53,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:53,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:53,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:53,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:53,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:53,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:53,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:53,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:53,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:53,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:53,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:53,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:53,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:53,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:53,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:53,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:53,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:55,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:55,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:55,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:55,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:55,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:55,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:55,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:55,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:55,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:55,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:55,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:55,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:55,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:55,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:55,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:55,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:55,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:55,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:55,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:31:55,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:12,333 WARN L205 SmtUtils]: Spent 12.18 s on a formula simplification that was a NOOP. DAG size: 32 [2021-05-02 20:32:12,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:12,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:14,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:14,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:14,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:14,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:14,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:14,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:14,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:14,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:14,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:14,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:14,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:14,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:14,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:14,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:14,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:14,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:14,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:14,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:14,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:16,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:16,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:16,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:16,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:16,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:16,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:16,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:16,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:16,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:16,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:16,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:16,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:16,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:16,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:16,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:16,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:16,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:16,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:16,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:16,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:35,934 WARN L205 SmtUtils]: Spent 12.18 s on a formula simplification that was a NOOP. DAG size: 32 [2021-05-02 20:32:35,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:35,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:37,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:37,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:37,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:37,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:37,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:37,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:37,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:37,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:37,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:37,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:37,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:37,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:37,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:37,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:37,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:37,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:37,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:37,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:37,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:40,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:40,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:40,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:40,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:40,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:40,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:40,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:40,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:40,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:40,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:40,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:40,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:40,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:40,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:40,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:40,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:40,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:40,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:40,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:40,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:32:42,060 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_main_~a~0_BEFORE_CALL_102 Int) (v_main_~r~0_BEFORE_CALL_162 Int) (v_main_~y~0_BEFORE_CALL_215 Int) (v_main_~x~0_BEFORE_CALL_263 Int)) (let ((.cse0 (* v_main_~r~0_BEFORE_CALL_162 v_main_~y~0_BEFORE_CALL_215)) (.cse1 (* v_main_~y~0_BEFORE_CALL_215 v_main_~x~0_BEFORE_CALL_263))) (and (not (= v_main_~a~0_BEFORE_CALL_102 (+ .cse0 v_main_~x~0_BEFORE_CALL_263))) (< v_main_~y~0_BEFORE_CALL_215 (* 2 v_main_~a~0_BEFORE_CALL_102)) (< v_main_~a~0_BEFORE_CALL_102 v_main_~y~0_BEFORE_CALL_215) (= (+ .cse0 (* v_main_~a~0_BEFORE_CALL_102 v_main_~y~0_BEFORE_CALL_215) v_main_~x~0_BEFORE_CALL_263) (+ v_main_~a~0_BEFORE_CALL_102 (* v_main_~r~0_BEFORE_CALL_162 v_main_~y~0_BEFORE_CALL_215 v_main_~y~0_BEFORE_CALL_215) .cse1)) (<= 0 v_main_~x~0_BEFORE_CALL_263) (< .cse1 2147483647) (<= v_main_~x~0_BEFORE_CALL_263 5)))) is different from false [2021-05-02 20:32:44,067 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_main_~a~0_BEFORE_CALL_102 Int) (v_main_~r~0_BEFORE_CALL_162 Int) (v_main_~y~0_BEFORE_CALL_215 Int) (v_main_~x~0_BEFORE_CALL_263 Int)) (let ((.cse0 (* v_main_~r~0_BEFORE_CALL_162 v_main_~y~0_BEFORE_CALL_215)) (.cse1 (* v_main_~y~0_BEFORE_CALL_215 v_main_~x~0_BEFORE_CALL_263))) (and (not (= v_main_~a~0_BEFORE_CALL_102 (+ .cse0 v_main_~x~0_BEFORE_CALL_263))) (< v_main_~y~0_BEFORE_CALL_215 (* 2 v_main_~a~0_BEFORE_CALL_102)) (< v_main_~a~0_BEFORE_CALL_102 v_main_~y~0_BEFORE_CALL_215) (= (+ .cse0 (* v_main_~a~0_BEFORE_CALL_102 v_main_~y~0_BEFORE_CALL_215) v_main_~x~0_BEFORE_CALL_263) (+ v_main_~a~0_BEFORE_CALL_102 (* v_main_~r~0_BEFORE_CALL_162 v_main_~y~0_BEFORE_CALL_215 v_main_~y~0_BEFORE_CALL_215) .cse1)) (<= 0 v_main_~x~0_BEFORE_CALL_263) (< .cse1 2147483647) (<= v_main_~x~0_BEFORE_CALL_263 5)))) is different from true [2021-05-02 20:32:44,068 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 110 proven. 71 refuted. 0 times theorem prover too weak. 496 trivial. 16 not checked. [2021-05-02 20:32:44,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:32:44,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378669716] [2021-05-02 20:32:44,069 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:32:44,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494378336] [2021-05-02 20:32:44,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494378336] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:32:44,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:32:44,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-05-02 20:32:44,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641764058] [2021-05-02 20:32:44,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-02 20:32:44,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:32:44,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-02 20:32:44,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=284, Unknown=11, NotChecked=70, Total=420 [2021-05-02 20:32:44,070 INFO L87 Difference]: Start difference. First operand 348 states and 469 transitions. Second operand has 21 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 9 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2021-05-02 20:32:56,506 WARN L205 SmtUtils]: Spent 6.09 s on a formula simplification. DAG size of input: 40 DAG size of output: 6 [2021-05-02 20:33:21,278 WARN L205 SmtUtils]: Spent 5.62 s on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2021-05-02 20:34:09,238 WARN L205 SmtUtils]: Spent 28.92 s on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2021-05-02 20:35:42,992 WARN L205 SmtUtils]: Spent 1.22 m on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2021-05-02 20:36:30,317 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (exists ((v_main_~a~0_BEFORE_CALL_102 Int) (v_main_~r~0_BEFORE_CALL_162 Int) (v_main_~y~0_BEFORE_CALL_215 Int) (v_main_~x~0_BEFORE_CALL_263 Int)) (let ((.cse1 (* v_main_~r~0_BEFORE_CALL_162 v_main_~y~0_BEFORE_CALL_215)) (.cse2 (* v_main_~y~0_BEFORE_CALL_215 v_main_~x~0_BEFORE_CALL_263))) (and (not (= v_main_~a~0_BEFORE_CALL_102 (+ .cse1 v_main_~x~0_BEFORE_CALL_263))) (< v_main_~y~0_BEFORE_CALL_215 (* 2 v_main_~a~0_BEFORE_CALL_102)) (< v_main_~a~0_BEFORE_CALL_102 v_main_~y~0_BEFORE_CALL_215) (= (+ .cse1 (* v_main_~a~0_BEFORE_CALL_102 v_main_~y~0_BEFORE_CALL_215) v_main_~x~0_BEFORE_CALL_263) (+ v_main_~a~0_BEFORE_CALL_102 (* v_main_~r~0_BEFORE_CALL_162 v_main_~y~0_BEFORE_CALL_215 v_main_~y~0_BEFORE_CALL_215) .cse2)) (<= 0 v_main_~x~0_BEFORE_CALL_263) (< .cse2 2147483647) (<= v_main_~x~0_BEFORE_CALL_263 5)))))) (and (= |c___VERIFIER_assert_#in~cond| c___VERIFIER_assert_~cond) .cse0 (or (= c___VERIFIER_assert_~cond 1) (and (= c___VERIFIER_assert_~cond 0) .cse0)))) is different from false [2021-05-02 20:36:34,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:36:34,409 INFO L93 Difference]: Finished difference Result 441 states and 605 transitions. [2021-05-02 20:36:34,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 20:36:34,410 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 9 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) Word has length 144 [2021-05-02 20:36:34,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:36:34,412 INFO L225 Difference]: With dead ends: 441 [2021-05-02 20:36:34,412 INFO L226 Difference]: Without dead ends: 440 [2021-05-02 20:36:34,413 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 224043.5ms TimeCoverageRelationStatistics Valid=111, Invalid=631, Unknown=26, NotChecked=162, Total=930 [2021-05-02 20:36:34,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-05-02 20:36:34,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 370. [2021-05-02 20:36:34,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 201 states have (on average 1.1243781094527363) internal successors, (226), 204 states have internal predecessors, (226), 133 states have call successors, (133), 36 states have call predecessors, (133), 35 states have return successors, (130), 129 states have call predecessors, (130), 130 states have call successors, (130) [2021-05-02 20:36:34,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 489 transitions. [2021-05-02 20:36:34,421 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 489 transitions. Word has length 144 [2021-05-02 20:36:34,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:36:34,422 INFO L480 AbstractCegarLoop]: Abstraction has 370 states and 489 transitions. [2021-05-02 20:36:34,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 9 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2021-05-02 20:36:34,422 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 489 transitions. [2021-05-02 20:36:34,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-02 20:36:34,423 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:36:34,423 INFO L523 BasicCegarLoop]: trace histogram [19, 18, 18, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 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] [2021-05-02 20:36:34,626 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:36:34,626 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:36:34,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:36:34,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1855514487, now seen corresponding path program 7 times [2021-05-02 20:36:34,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:36:34,627 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195364643] [2021-05-02 20:36:34,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:36:34,631 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:36:34,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2117928223] [2021-05-02 20:36:34,632 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:36:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:36:34,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 100 conjunts are in the unsatisfiable core [2021-05-02 20:36:34,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:36:34,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:34,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:34,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:34,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:34,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:34,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:34,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:34,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:34,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:34,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:34,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:34,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:34,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:34,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:34,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:34,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:34,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:34,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:35,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:35,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:35,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:35,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:35,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:35,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:35,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:35,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:35,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:35,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:35,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:35,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:35,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:35,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:35,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:35,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:35,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:35,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:35,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:35,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:35,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:35,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:35,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:35,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:35,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:35,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:35,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:36,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:36,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:36,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:36,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:36,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:36,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:36,271 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 106 proven. 208 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2021-05-02 20:36:36,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:36:36,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195364643] [2021-05-02 20:36:36,271 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:36:36,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117928223] [2021-05-02 20:36:36,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117928223] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:36:36,271 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:36:36,271 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-05-02 20:36:36,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478858252] [2021-05-02 20:36:36,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-02 20:36:36,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:36:36,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-02 20:36:36,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2021-05-02 20:36:36,272 INFO L87 Difference]: Start difference. First operand 370 states and 489 transitions. Second operand has 22 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 17 states have internal predecessors, (37), 12 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 12 states have call successors, (25) [2021-05-02 20:36:38,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:36:38,187 INFO L93 Difference]: Finished difference Result 435 states and 577 transitions. [2021-05-02 20:36:38,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 20:36:38,188 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 17 states have internal predecessors, (37), 12 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 12 states have call successors, (25) Word has length 149 [2021-05-02 20:36:38,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:36:38,190 INFO L225 Difference]: With dead ends: 435 [2021-05-02 20:36:38,190 INFO L226 Difference]: Without dead ends: 435 [2021-05-02 20:36:38,190 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1420.7ms TimeCoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2021-05-02 20:36:38,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2021-05-02 20:36:38,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 432. [2021-05-02 20:36:38,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 234 states have (on average 1.123931623931624) internal successors, (263), 237 states have internal predecessors, (263), 157 states have call successors, (157), 41 states have call predecessors, (157), 40 states have return successors, (154), 153 states have call predecessors, (154), 154 states have call successors, (154) [2021-05-02 20:36:38,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 574 transitions. [2021-05-02 20:36:38,198 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 574 transitions. Word has length 149 [2021-05-02 20:36:38,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:36:38,198 INFO L480 AbstractCegarLoop]: Abstraction has 432 states and 574 transitions. [2021-05-02 20:36:38,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 17 states have internal predecessors, (37), 12 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 12 states have call successors, (25) [2021-05-02 20:36:38,198 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 574 transitions. [2021-05-02 20:36:38,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-05-02 20:36:38,199 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:36:38,199 INFO L523 BasicCegarLoop]: trace histogram [20, 19, 19, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 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] [2021-05-02 20:36:38,414 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:36:38,414 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:36:38,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:36:38,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1866948721, now seen corresponding path program 8 times [2021-05-02 20:36:38,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:36:38,415 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564256604] [2021-05-02 20:36:38,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:36:38,422 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:36:38,422 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [635353438] [2021-05-02 20:36:38,423 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 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:36:38,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 20:36:38,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:36:38,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 74 conjunts are in the unsatisfiable core [2021-05-02 20:36:38,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:36:38,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:38,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:39,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:40,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:40,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:40,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:40,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:40,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:40,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:40,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:40,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:40,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:40,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:40,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:40,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:40,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:40,232 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 97 proven. 82 refuted. 0 times theorem prover too weak. 666 trivial. 0 not checked. [2021-05-02 20:36:40,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:36:40,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564256604] [2021-05-02 20:36:40,232 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:36:40,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635353438] [2021-05-02 20:36:40,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635353438] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:36:40,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:36:40,233 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-05-02 20:36:40,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281938148] [2021-05-02 20:36:40,233 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-02 20:36:40,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:36:40,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-02 20:36:40,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2021-05-02 20:36:40,233 INFO L87 Difference]: Start difference. First operand 432 states and 574 transitions. Second operand has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 10 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 10 states have call predecessors, (26), 9 states have call successors, (26) [2021-05-02 20:36:41,948 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2021-05-02 20:36:42,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:36:42,378 INFO L93 Difference]: Finished difference Result 445 states and 585 transitions. [2021-05-02 20:36:42,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-02 20:36:42,379 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 10 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 10 states have call predecessors, (26), 9 states have call successors, (26) Word has length 154 [2021-05-02 20:36:42,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:36:42,381 INFO L225 Difference]: With dead ends: 445 [2021-05-02 20:36:42,381 INFO L226 Difference]: Without dead ends: 445 [2021-05-02 20:36:42,381 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1739.0ms TimeCoverageRelationStatistics Valid=122, Invalid=748, Unknown=0, NotChecked=0, Total=870 [2021-05-02 20:36:42,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2021-05-02 20:36:42,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 440. [2021-05-02 20:36:42,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 240 states have (on average 1.1208333333333333) internal successors, (269), 243 states have internal predecessors, (269), 157 states have call successors, (157), 43 states have call predecessors, (157), 42 states have return successors, (154), 153 states have call predecessors, (154), 154 states have call successors, (154) [2021-05-02 20:36:42,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 580 transitions. [2021-05-02 20:36:42,401 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 580 transitions. Word has length 154 [2021-05-02 20:36:42,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:36:42,402 INFO L480 AbstractCegarLoop]: Abstraction has 440 states and 580 transitions. [2021-05-02 20:36:42,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 10 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 10 states have call predecessors, (26), 9 states have call successors, (26) [2021-05-02 20:36:42,402 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 580 transitions. [2021-05-02 20:36:42,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-05-02 20:36:42,403 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:36:42,403 INFO L523 BasicCegarLoop]: trace histogram [20, 19, 19, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 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] [2021-05-02 20:36:42,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-05-02 20:36:42,619 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:36:42,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:36:42,619 INFO L82 PathProgramCache]: Analyzing trace with hash 742722429, now seen corresponding path program 9 times [2021-05-02 20:36:42,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:36:42,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824655770] [2021-05-02 20:36:42,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:36:42,625 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:36:42,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [91272654] [2021-05-02 20:36:42,625 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 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:36:42,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-02 20:36:42,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:36:42,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 75 conjunts are in the unsatisfiable core [2021-05-02 20:36:42,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:36:42,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:42,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:42,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:42,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:42,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:42,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:42,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:42,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:42,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:42,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:42,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:42,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:42,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:42,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:42,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:42,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:42,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:42,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:42,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:42,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:42,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:42,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:43,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:47,730 WARN L205 SmtUtils]: Spent 4.17 s on a formula simplification that was a NOOP. DAG size: 36 [2021-05-02 20:36:49,759 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~y~0 c_main_~y~0))) (and (= .cse0 c_main_~yy~0) (= (* c_main_~x~0 c_main_~y~0) c_main_~xy~0) (= c_main_~p~0 0) (<= c_main_~x~0 5) (= c_main_~r~0 1) (<= 0 c_main_~x~0) (< 0 c_main_~c~0) (= c_main_~k~0 1) (= (+ (* c_main_~y~0 c_main_~s~0) .cse0 (* c_main_~x~0 c_main_~q~0) c_main_~c~0) (+ c_main_~y~0 (* c_main_~xy~0 c_main_~q~0) (* c_main_~y~0 c_main_~c~0) (* c_main_~yy~0 c_main_~s~0))) (= c_main_~q~0 1) (< (* 2 c_main_~c~0) c_main_~y~0))) is different from false [2021-05-02 20:37:16,652 WARN L205 SmtUtils]: Spent 13.69 s on a formula simplification that was a NOOP. DAG size: 29 [2021-05-02 20:37:16,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:16,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:17,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:17,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:19,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:19,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:19,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:19,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:19,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:19,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:19,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:19,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:19,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:19,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:19,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:19,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:19,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:19,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:19,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:19,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:19,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:19,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:19,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:19,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:20,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:22,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:22,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:22,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:22,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:22,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:22,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:22,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:24,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:24,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:24,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:24,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:24,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:24,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:24,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:24,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:26,839 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_main_~xy~0_BEFORE_CALL_132 Int) (v_main_~b~0_BEFORE_CALL_289 Int) (v_main_~y~0_BEFORE_CALL_281 Int) (v_main_~s~0_BEFORE_CALL_253 Int)) (let ((.cse2 (* v_main_~b~0_BEFORE_CALL_289 v_main_~y~0_BEFORE_CALL_281))) (let ((.cse1 (* v_main_~y~0_BEFORE_CALL_281 v_main_~y~0_BEFORE_CALL_281 v_main_~s~0_BEFORE_CALL_253)) (.cse0 (+ v_main_~xy~0_BEFORE_CALL_132 .cse2 (* v_main_~y~0_BEFORE_CALL_281 v_main_~s~0_BEFORE_CALL_253)))) (and (<= .cse0 (+ .cse1 v_main_~b~0_BEFORE_CALL_289 5)) (< 0 v_main_~b~0_BEFORE_CALL_289) (= (+ (* v_main_~b~0_BEFORE_CALL_289 v_main_~y~0_BEFORE_CALL_281 v_main_~y~0_BEFORE_CALL_281) .cse1 (* v_main_~xy~0_BEFORE_CALL_132 v_main_~y~0_BEFORE_CALL_281)) (+ (* v_main_~y~0_BEFORE_CALL_281 v_main_~y~0_BEFORE_CALL_281 v_main_~y~0_BEFORE_CALL_281 v_main_~s~0_BEFORE_CALL_253) v_main_~xy~0_BEFORE_CALL_132 .cse2)) (<= (+ .cse1 v_main_~b~0_BEFORE_CALL_289) .cse0) (< (* 2 v_main_~b~0_BEFORE_CALL_289) v_main_~y~0_BEFORE_CALL_281))))) is different from true [2021-05-02 20:37:26,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:26,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:29,227 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2021-05-02 20:37:29,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:29,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:29,446 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 149 proven. 73 refuted. 6 times theorem prover too weak. 615 trivial. 2 not checked. [2021-05-02 20:37:29,447 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:37:29,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824655770] [2021-05-02 20:37:29,447 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:37:29,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91272654] [2021-05-02 20:37:29,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91272654] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:37:29,447 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:37:29,447 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-05-02 20:37:29,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239156553] [2021-05-02 20:37:29,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 20:37:29,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:37:29,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 20:37:29,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=224, Unknown=9, NotChecked=62, Total=342 [2021-05-02 20:37:29,448 INFO L87 Difference]: Start difference. First operand 440 states and 580 transitions. Second operand has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 6 states have call successors, (22) [2021-05-02 20:37:39,533 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-05-02 20:38:46,181 WARN L205 SmtUtils]: Spent 52.81 s on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2021-05-02 20:39:21,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:39:21,685 INFO L93 Difference]: Finished difference Result 470 states and 620 transitions. [2021-05-02 20:39:21,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 20:39:21,688 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 6 states have call successors, (22) Word has length 154 [2021-05-02 20:39:21,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:39:21,689 INFO L225 Difference]: With dead ends: 470 [2021-05-02 20:39:21,690 INFO L226 Difference]: Without dead ends: 470 [2021-05-02 20:39:21,690 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 108668.4ms TimeCoverageRelationStatistics Valid=87, Invalid=458, Unknown=15, NotChecked=90, Total=650 [2021-05-02 20:39:21,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-05-02 20:39:21,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 463. [2021-05-02 20:39:21,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 251 states have (on average 1.1235059760956174) internal successors, (282), 253 states have internal predecessors, (282), 167 states have call successors, (167), 45 states have call predecessors, (167), 44 states have return successors, (164), 164 states have call predecessors, (164), 164 states have call successors, (164) [2021-05-02 20:39:21,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 613 transitions. [2021-05-02 20:39:21,698 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 613 transitions. Word has length 154 [2021-05-02 20:39:21,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:39:21,698 INFO L480 AbstractCegarLoop]: Abstraction has 463 states and 613 transitions. [2021-05-02 20:39:21,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 6 states have call successors, (22) [2021-05-02 20:39:21,698 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 613 transitions. [2021-05-02 20:39:21,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-05-02 20:39:21,699 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:39:21,699 INFO L523 BasicCegarLoop]: trace histogram [21, 20, 20, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1] [2021-05-02 20:39:21,914 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:39:21,914 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:39:21,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:39:21,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1947214227, now seen corresponding path program 6 times [2021-05-02 20:39:21,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:39:21,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058320469] [2021-05-02 20:39:21,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:39:21,919 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:39:21,919 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [208167964] [2021-05-02 20:39:21,919 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 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:39:22,000 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-05-02 20:39:22,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:39:22,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-02 20:39:22,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:39:22,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:22,978 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 96 proven. 34 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2021-05-02 20:39:22,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:39:22,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058320469] [2021-05-02 20:39:22,978 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:39:22,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208167964] [2021-05-02 20:39:22,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208167964] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:39:22,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:39:22,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-05-02 20:39:22,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570320654] [2021-05-02 20:39:22,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 20:39:22,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:39:22,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 20:39:22,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-05-02 20:39:22,979 INFO L87 Difference]: Start difference. First operand 463 states and 613 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2021-05-02 20:39:25,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:39:25,782 INFO L93 Difference]: Finished difference Result 469 states and 618 transitions. [2021-05-02 20:39:25,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 20:39:25,784 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 157 [2021-05-02 20:39:25,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:39:25,786 INFO L225 Difference]: With dead ends: 469 [2021-05-02 20:39:25,786 INFO L226 Difference]: Without dead ends: 468 [2021-05-02 20:39:25,786 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 553.1ms TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-05-02 20:39:25,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-05-02 20:39:25,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 466. [2021-05-02 20:39:25,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 254 states have (on average 1.1181102362204725) internal successors, (284), 255 states have internal predecessors, (284), 166 states have call successors, (166), 46 states have call predecessors, (166), 45 states have return successors, (164), 164 states have call predecessors, (164), 164 states have call successors, (164) [2021-05-02 20:39:25,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 614 transitions. [2021-05-02 20:39:25,794 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 614 transitions. Word has length 157 [2021-05-02 20:39:25,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:39:25,794 INFO L480 AbstractCegarLoop]: Abstraction has 466 states and 614 transitions. [2021-05-02 20:39:25,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2021-05-02 20:39:25,794 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 614 transitions. [2021-05-02 20:39:25,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-05-02 20:39:25,795 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:39:25,795 INFO L523 BasicCegarLoop]: trace histogram [21, 20, 20, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:39:26,010 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-05-02 20:39:26,010 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:39:26,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:39:26,011 INFO L82 PathProgramCache]: Analyzing trace with hash 915217378, now seen corresponding path program 7 times [2021-05-02 20:39:26,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:39:26,011 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423672513] [2021-05-02 20:39:26,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:39:26,015 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:39:26,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [455088059] [2021-05-02 20:39:26,015 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 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:39:26,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:39:26,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 91 conjunts are in the unsatisfiable core [2021-05-02 20:39:26,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:39:26,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:26,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:27,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:27,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:27,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:27,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:27,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:27,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:27,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:27,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:27,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:27,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:27,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:27,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:27,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:27,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:27,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:27,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:27,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:27,889 INFO L134 CoverageAnalysis]: Checked inductivity of 927 backedges. 73 proven. 211 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2021-05-02 20:39:27,890 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:39:27,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423672513] [2021-05-02 20:39:27,890 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:39:27,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455088059] [2021-05-02 20:39:27,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455088059] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:39:27,890 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:39:27,890 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-05-02 20:39:27,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047358336] [2021-05-02 20:39:27,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-02 20:39:27,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:39:27,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-02 20:39:27,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-05-02 20:39:27,891 INFO L87 Difference]: Start difference. First operand 466 states and 614 transitions. Second operand has 21 states, 19 states have (on average 2.0) internal successors, (38), 17 states have internal predecessors, (38), 11 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 10 states have call predecessors, (27), 10 states have call successors, (27) [2021-05-02 20:39:29,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:39:29,744 INFO L93 Difference]: Finished difference Result 486 states and 638 transitions. [2021-05-02 20:39:29,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 20:39:29,746 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.0) internal successors, (38), 17 states have internal predecessors, (38), 11 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 10 states have call predecessors, (27), 10 states have call successors, (27) Word has length 160 [2021-05-02 20:39:29,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:39:29,772 INFO L225 Difference]: With dead ends: 486 [2021-05-02 20:39:29,772 INFO L226 Difference]: Without dead ends: 486 [2021-05-02 20:39:29,773 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1599.2ms TimeCoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2021-05-02 20:39:29,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2021-05-02 20:39:29,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 484. [2021-05-02 20:39:29,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 265 states have (on average 1.1169811320754717) internal successors, (296), 267 states have internal predecessors, (296), 171 states have call successors, (171), 48 states have call predecessors, (171), 47 states have return successors, (169), 168 states have call predecessors, (169), 169 states have call successors, (169) [2021-05-02 20:39:29,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 636 transitions. [2021-05-02 20:39:29,782 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 636 transitions. Word has length 160 [2021-05-02 20:39:29,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:39:29,782 INFO L480 AbstractCegarLoop]: Abstraction has 484 states and 636 transitions. [2021-05-02 20:39:29,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 19 states have (on average 2.0) internal successors, (38), 17 states have internal predecessors, (38), 11 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 10 states have call predecessors, (27), 10 states have call successors, (27) [2021-05-02 20:39:29,782 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 636 transitions. [2021-05-02 20:39:29,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-05-02 20:39:29,783 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:39:29,783 INFO L523 BasicCegarLoop]: trace histogram [21, 20, 20, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:39:29,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:39:29,984 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:39:29,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:39:29,984 INFO L82 PathProgramCache]: Analyzing trace with hash -970371602, now seen corresponding path program 8 times [2021-05-02 20:39:29,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:39:29,984 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313382150] [2021-05-02 20:39:29,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:39:29,988 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:39:29,988 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1386867649] [2021-05-02 20:39:29,988 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 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:39:30,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 20:39:30,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:39:30,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 89 conjunts are in the unsatisfiable core [2021-05-02 20:39:30,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:39:30,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:30,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:31,934 WARN L205 SmtUtils]: Spent 911.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2021-05-02 20:39:31,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:31,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:33,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:33,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:33,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:33,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:33,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:33,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:33,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:35,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:35,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:35,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:35,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:35,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:35,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:35,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:36,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:38,020 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_main_~s~0_BEFORE_CALL_314 Int) (v_main_~b~0_BEFORE_CALL_348 Int) (v_main_~p~0_BEFORE_CALL_262 Int) (v_main_~y~0_BEFORE_CALL_344 Int)) (let ((.cse0 (+ v_main_~b~0_BEFORE_CALL_348 v_main_~y~0_BEFORE_CALL_344))) (and (< v_main_~b~0_BEFORE_CALL_348 v_main_~y~0_BEFORE_CALL_344) (<= 1 .cse0) (= (+ v_main_~y~0_BEFORE_CALL_344 (* v_main_~s~0_BEFORE_CALL_314 v_main_~p~0_BEFORE_CALL_262 v_main_~y~0_BEFORE_CALL_344) (* v_main_~s~0_BEFORE_CALL_314 v_main_~b~0_BEFORE_CALL_348 v_main_~p~0_BEFORE_CALL_262) (* v_main_~s~0_BEFORE_CALL_314 v_main_~y~0_BEFORE_CALL_344)) 0) (= (+ (* v_main_~b~0_BEFORE_CALL_348 v_main_~p~0_BEFORE_CALL_262) (* v_main_~p~0_BEFORE_CALL_262 v_main_~y~0_BEFORE_CALL_344)) 0) (<= .cse0 5)))) is different from false [2021-05-02 20:39:40,039 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_main_~s~0_BEFORE_CALL_314 Int) (v_main_~b~0_BEFORE_CALL_348 Int) (v_main_~p~0_BEFORE_CALL_262 Int) (v_main_~y~0_BEFORE_CALL_344 Int)) (let ((.cse0 (+ v_main_~b~0_BEFORE_CALL_348 v_main_~y~0_BEFORE_CALL_344))) (and (< v_main_~b~0_BEFORE_CALL_348 v_main_~y~0_BEFORE_CALL_344) (<= 1 .cse0) (= (+ v_main_~y~0_BEFORE_CALL_344 (* v_main_~s~0_BEFORE_CALL_314 v_main_~p~0_BEFORE_CALL_262 v_main_~y~0_BEFORE_CALL_344) (* v_main_~s~0_BEFORE_CALL_314 v_main_~b~0_BEFORE_CALL_348 v_main_~p~0_BEFORE_CALL_262) (* v_main_~s~0_BEFORE_CALL_314 v_main_~y~0_BEFORE_CALL_344)) 0) (= (+ (* v_main_~b~0_BEFORE_CALL_348 v_main_~p~0_BEFORE_CALL_262) (* v_main_~p~0_BEFORE_CALL_262 v_main_~y~0_BEFORE_CALL_344)) 0) (<= .cse0 5)))) is different from true [2021-05-02 20:39:40,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:40,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,432 WARN L205 SmtUtils]: Spent 2.60 s on a formula simplification that was a NOOP. DAG size: 34 [2021-05-02 20:39:43,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:44,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:44,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:44,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:44,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:46,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:46,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:46,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:46,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:46,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:46,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:46,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:46,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:46,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:46,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:46,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:48,775 WARN L205 SmtUtils]: Spent 2.19 s on a formula simplification that was a NOOP. DAG size: 36 [2021-05-02 20:39:48,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:48,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:48,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:48,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:48,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:48,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:51,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:51,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:51,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:51,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:51,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:51,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:51,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:51,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:51,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:53,149 WARN L205 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2021-05-02 20:39:53,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:53,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:53,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:53,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:53,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:53,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:53,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:53,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:53,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:53,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:53,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:53,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:53,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:53,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:53,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:53,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:53,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:53,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:53,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:53,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:53,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:53,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:53,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:53,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:53,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:53,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:53,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:53,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:55,311 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (= c_main_~y~0 0)) (.cse4 (= c_main_~x~0 0))) (let ((.cse5 (<= c_main_~x~0 5)) (.cse10 (not .cse4)) (.cse0 (= (* 3 c_main_~y~0) (+ (* 2 c_main_~x~0) c_main_~b~0))) (.cse1 (< c_main_~x~0 (* 2 c_main_~y~0))) (.cse3 (< (* 4 c_main_~y~0) (* 3 c_main_~x~0))) (.cse11 (not .cse2))) (or (and .cse0 .cse1 (= c_main_~y~0 (* c_main_~x~0 c_main_~q~0)) .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse5 .cse2 .cse3 (exists ((aux_div_aux_mod_aux_mod_main_~temp~0_44_65_42 Int) (aux_div_aux_mod_main_~temp~0_44_65 Int)) (let ((.cse8 (* (- 1) c_main_~x~0 c_main_~q~0)) (.cse9 (* c_main_~x~0 2))) (let ((.cse6 (* 2 aux_div_aux_mod_aux_mod_main_~temp~0_44_65_42)) (.cse7 (div (+ c_main_~y~0 (* (- 1) c_main_~y~0 c_main_~s~0) (* (- 2) c_main_~y~0 aux_div_aux_mod_main_~temp~0_44_65) (* (- 2) c_main_~y~0 aux_div_aux_mod_aux_mod_main_~temp~0_44_65_42) .cse8) .cse9))) (and (< .cse6 2) (= c_main_~x~0 (+ (* c_main_~x~0 .cse7) c_main_~y~0)) (<= 0 .cse6) (= .cse7 (+ (* c_main_~q~0 aux_div_aux_mod_main_~temp~0_44_65) (* 2 (* aux_div_aux_mod_main_~temp~0_44_65 .cse7)) 1)) (= (mod (+ .cse8 c_main_~y~0 (* (- 1) c_main_~y~0 (+ (* aux_div_aux_mod_aux_mod_main_~temp~0_44_65_42 2) (* aux_div_aux_mod_main_~temp~0_44_65 2) c_main_~s~0))) .cse9) 0))))) .cse10) (and .cse0 .cse1 .cse5 .cse3 .cse11 .cse10 (exists ((aux_div_aux_mod_aux_mod_main_~temp~0_44_65_42 Int) (aux_div_aux_mod_main_~temp~0_44_65 Int)) (let ((.cse16 (* (- 1) c_main_~y~0 c_main_~s~0)) (.cse14 (* (- 2) c_main_~y~0 aux_div_aux_mod_main_~temp~0_44_65)) (.cse15 (* (- 2) c_main_~y~0 aux_div_aux_mod_aux_mod_main_~temp~0_44_65_42)) (.cse13 (* (- 1) c_main_~x~0 c_main_~q~0)) (.cse17 (* c_main_~x~0 2))) (let ((.cse12 (* 2 aux_div_aux_mod_aux_mod_main_~temp~0_44_65_42)) (.cse18 (div (+ c_main_~y~0 .cse16 .cse14 .cse15 .cse13) .cse17))) (let ((.cse20 (* 2 (div (+ (* (- 1) c_main_~y~0) c_main_~x~0 (* (- 1) c_main_~x~0 .cse18)) c_main_~y~0))) (.cse19 (+ .cse12 (* 2 aux_div_aux_mod_main_~temp~0_44_65)))) (and (< .cse12 2) (<= 0 .cse12) (= (mod (+ c_main_~x~0 (* c_main_~y~0 (- 1)) (* (- 1) c_main_~x~0 (div (+ .cse13 .cse14 c_main_~y~0 .cse15 .cse16) .cse17))) c_main_~y~0) 0) (= .cse18 (+ (* c_main_~q~0 aux_div_aux_mod_main_~temp~0_44_65) (* 2 (* aux_div_aux_mod_main_~temp~0_44_65 .cse18)) 1)) (< .cse19 (+ .cse20 2)) (= (mod (+ .cse13 c_main_~y~0 (* (- 1) c_main_~y~0 (+ (* aux_div_aux_mod_aux_mod_main_~temp~0_44_65_42 2) (* aux_div_aux_mod_main_~temp~0_44_65 2) c_main_~s~0))) .cse17) 0) (<= .cse20 .cse19))))))) (and .cse0 (= (mod (+ (* (- 1) c_main_~x~0 c_main_~q~0) c_main_~y~0) c_main_~y~0) 0) .cse1 .cse3 .cse11 .cse4)))) is different from false [2021-05-02 20:39:55,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:55,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:55,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:55,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:55,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:55,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:55,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:55,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:55,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:55,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:55,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:55,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:55,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:55,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:55,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:55,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:55,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:55,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:57,433 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (= c_main_~y~0 0)) (.cse4 (= c_main_~x~0 0))) (let ((.cse5 (<= c_main_~x~0 5)) (.cse10 (not .cse4)) (.cse0 (= (* 3 c_main_~y~0) (+ (* 2 c_main_~x~0) c_main_~b~0))) (.cse1 (< c_main_~x~0 (* 2 c_main_~y~0))) (.cse3 (< (* 4 c_main_~y~0) (* 3 c_main_~x~0))) (.cse20 (not .cse2))) (or (and .cse0 .cse1 (= c_main_~y~0 (* c_main_~x~0 c_main_~q~0)) .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse5 .cse2 .cse3 (exists ((aux_div_aux_mod_aux_mod_main_~temp~0_44_65_42 Int) (aux_div_aux_mod_main_~temp~0_44_65 Int)) (let ((.cse8 (* (- 1) c_main_~x~0 c_main_~q~0)) (.cse9 (* c_main_~x~0 2))) (let ((.cse6 (* 2 aux_div_aux_mod_aux_mod_main_~temp~0_44_65_42)) (.cse7 (div (+ c_main_~y~0 (* (- 1) c_main_~y~0 c_main_~s~0) (* (- 2) c_main_~y~0 aux_div_aux_mod_main_~temp~0_44_65) (* (- 2) c_main_~y~0 aux_div_aux_mod_aux_mod_main_~temp~0_44_65_42) .cse8) .cse9))) (and (< .cse6 2) (= c_main_~x~0 (+ (* c_main_~x~0 .cse7) c_main_~y~0)) (<= 0 .cse6) (= .cse7 (+ (* c_main_~q~0 aux_div_aux_mod_main_~temp~0_44_65) (* 2 (* aux_div_aux_mod_main_~temp~0_44_65 .cse7)) 1)) (= (mod (+ .cse8 c_main_~y~0 (* (- 1) c_main_~y~0 (+ (* aux_div_aux_mod_aux_mod_main_~temp~0_44_65_42 2) (* aux_div_aux_mod_main_~temp~0_44_65 2) c_main_~s~0))) .cse9) 0))))) .cse10) (and .cse0 (exists ((v_prenex_2 Int) (v_prenex_1 Int)) (let ((.cse15 (* (- 1) c_main_~y~0 c_main_~s~0)) (.cse14 (* (- 2) c_main_~y~0 v_prenex_2)) (.cse12 (* (- 1) c_main_~x~0 c_main_~q~0)) (.cse16 (* (- 2) c_main_~y~0 v_prenex_1)) (.cse13 (* c_main_~x~0 2))) (let ((.cse11 (* 2 v_prenex_1)) (.cse19 (div (+ c_main_~y~0 .cse15 .cse14 .cse12 .cse16) .cse13))) (let ((.cse18 (* 2 (div (+ (* (- 1) c_main_~y~0) c_main_~x~0 (* (- 1) c_main_~x~0 .cse19)) c_main_~y~0))) (.cse17 (+ (* 2 v_prenex_2) .cse11))) (and (< .cse11 2) (= (mod (+ .cse12 c_main_~y~0 (* (- 1) c_main_~y~0 (+ (* v_prenex_2 2) (* v_prenex_1 2) c_main_~s~0))) .cse13) 0) (= (mod (+ c_main_~x~0 (* c_main_~y~0 (- 1)) (* (- 1) c_main_~x~0 (div (+ .cse14 .cse12 c_main_~y~0 .cse15 .cse16) .cse13))) c_main_~y~0) 0) (< .cse17 (+ .cse18 2)) (= .cse19 (+ (* v_prenex_2 c_main_~q~0) (* 2 (* v_prenex_2 .cse19)) 1)) (<= .cse18 .cse17) (<= 0 .cse11)))))) .cse1 .cse5 .cse3 .cse20 .cse10) (and .cse0 (= (mod (+ (* (- 1) c_main_~x~0 c_main_~q~0) c_main_~y~0) c_main_~y~0) 0) .cse1 .cse3 .cse20 .cse4)))) is different from false [2021-05-02 20:39:57,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:57,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:57,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:57,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:57,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:57,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:57,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:57,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:57,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:57,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:57,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:57,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:57,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:57,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:57,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:57,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:57,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:57,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:32,902 WARN L205 SmtUtils]: Spent 17.79 s on a formula simplification. DAG size of input: 104 DAG size of output: 63 [2021-05-02 20:40:32,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:32,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:32,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:32,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:32,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:32,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:32,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:32,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:32,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:32,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:32,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:32,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:32,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:32,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:32,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:32,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:32,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:32,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:32,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:33,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:33,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:33,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:33,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:33,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:33,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:33,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:33,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:33,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:33,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:33,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:33,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:33,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:33,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:36,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:38,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:38,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:38,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:38,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:38,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:38,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:38,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:38,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:38,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:38,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:38,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:38,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:38,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:38,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:38,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:38,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:38,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:38,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:38,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:38,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:38,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:38,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:38,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:38,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:38,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:38,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:38,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:39,918 WARN L159 QuantifierPusher]: Ignoring assumption.